As an Amazon Associate, we earn from qualifying purchases. Some links on this site are affiliate links at no extra cost to you. Our recommendations are based on thorough research and editorial judgment.

10 Best Magnetic Tape Rolls for Every Project You Can Dream Up
When choosing the best magnetic tape rolls, consider strong options like a 1″ x 10ft roll or the versatile 0.75″ x 26ft tape. They’re perfect for organizing light items, with strong 3M adhesive ensuring secure adhesion. These tapes can support up to 30-40 grams on clean, flat surfaces. For customization, opt for rolls that are easy to cut to fit your needs. If you want to learn about specific product recommendations, keep exploring your options.
Key Takeaways
- Magnetic tape rolls come in various widths and lengths, making them versatile for diverse projects, from organizing to crafting.
- Strong adhesive backing, often 3M, ensures items stay securely in place on clean, smooth surfaces for optimal performance.
- Perfect for lightweight objects, each magnetic tape can support items weighing up to 30-40 grams without compromising functionality.
- Easy to cut and customize, magnetic tape allows users to create precise lengths tailored to specific project needs.
- Ideal for teachers, students, and DIY enthusiasts, these tapes enhance organization and creativity across various applications.
Magnetic Tape Rolls with Strong Adhesive Backing (32ft Total)
Magnetic Tape 2 Rolls 32ft Magnets with Strong Adhesive Backing Anisotropic Flexible Magnetic...
- Sizes: 2 rolls of 16ft x 1/2" flexible magnet tape, extra thick (1.5mm) anisotropic magnetic roll. 2 rolls are equivalent to 3 rolls in length
- Strong adhesive backing: The adhesive on the back can be fastened firmly and can be used for a long time without curling after installation
- Magnetic Tape: One side of the magnetic coil is adhesive, and the other side is a strong magnet. You can put some light objects on it, such as small scissors, key, ruler...
If you’re looking for a reliable solution to organize your workspace, consider the Magnetic Tape Rolls with Strong Adhesive Backing. This product includes two 16ft rolls of 1/2-inch wide flexible tape. Each roll has a thickness of 1/16 inch, ensuring durability. The strong adhesive backing guarantees firm fastening without curling. One side features a powerful magnet, making it perfect for sticking small items like scissors, keys, and rulers to metal surfaces. Installation is easy; just cut the tape to your desired length and stick it onto clean surfaces. These rolls are versatile, suiting classrooms, offices, or DIY projects.
Best For: This product is best for teachers, students, office workers, and craft artisans looking to organize small metallic items efficiently.
Pros:
- Strong adhesive backing ensures reliable fastening without curling.
- Flexible and customizable design allows for easy cutting to desired lengths.
- Versatile applications across various settings, including education, home, and office use.
Cons:
- Limited to lightweight items; may not hold heavier objects securely.
- Requires clean surfaces for optimal adhesion, which may limit some uses.
- May lose magnetism over time with repeated use or exposure to extreme conditions.
Strong Adhesive Magnetic Tape Strip Roll (1″ x 10ft)
DTLHCNCT Strong Adhesive Magnetic Tape Strip Roll- 1" x 10ft, Cuttable Magnetic Sheets for,DIY Art...
- DTLHCNCT magnetic strip is perfect for DIY, art projects, whiteboards, and organizing classrooms. With a strong adhesive backing, it can be easily cut into pieces to fit...
- Whether you're creating custom magnets or organizing your workspace, the DTLHCNCT magnetic strip is the perfect solution. The adhesive backing ensures a strong hold...
- Quality and Convenience - DTLHCNCT Magnetic Tape Strip offers the perfect combination of strong adhesive and easy cutability, making it a must-have for teachers...
The Strong Adhesive Magnetic Tape Strip Roll (1″ x 10ft) is an excellent choice for teachers and crafters looking to enhance organization in their spaces. This tape is 0.06 inches thick, providing a robust hold. You can easily cut it into smaller pieces for customized applications, like creating fridge magnets or organizing classroom materials. Before applying, make sure to clean the surface, ensuring the best adhesion possible. After application, wait 24 hours before hanging anything to allow the adhesive to set. It’s versatile enough for home, school, and office projects, making it a practical tool for multiple uses.
Best For: Teachers, students, and crafters looking to enhance organization and creativity in their spaces.
Pros:
- Strong adhesive backing ensures reliable hold on various surfaces.
- Versatile for multiple applications, including DIY projects and classroom organization.
- Easy to cut for customized uses, such as making unique magnets.
Cons:
- Surface must be clean for optimal adhesion, which can require extra preparation.
- There is a waiting period of 24 hours before items can be hung, potentially delaying usage.
- Limited thickness could restrict the weight of items that can be safely attached.
20 Feet Magnetic Tape Strip Roll with 3M Self Adhesive Backing
Towjug 20 Feet Magnetic Tape Roll with Self Adhesive Backing, 1/2 in Width Flexible Sticky Magnet...
- USING TIPS: When you want to use the magnet tape to organize some metal item,pls make sure the item surface is flat, if the item is cylindrical,It will not be able to...
- VERSATILE APPLICATIONS: Our magnetic tape is perfect choice for teachers, students, nurses, office workers, DIY enthusiasts, moms, craft artisans, and anyone who loves to...
- EASY TO CUT AND INSTALL: The magnetic strip can be easily cut and installed. The strong adhesive allows for easy mounting.
Looking for a magnetic tape solution that works seamlessly for a range of projects? The 20 Feet Magnetic Tape Strip Roll with 3M Self-Adhesive Backing might be just what you need. This strip measures 1/2 inch wide and 0.06 inch thick, making it easy to cut for precise applications. It’s best for flat metal surfaces, so avoid using it on cylindrical items to guarantee quality adhesion. Simply clean the surface, stick the strip, and wait 24 hours for ideal bond strength. It’s versatile enough for teachers, DIY enthusiasts, and office workers, but keep in mind, it’s not for heavy-duty projects.
Best For: Teachers, DIY enthusiasts, and office workers looking for a versatile magnetic tape solution for light projects.
Pros:
- Versatile applications for various users, including students and craft artisans.
- Easy installation with simple cutting and sticking process.
- Strong 3M self-adhesive backing ensures reliable adhesion once set.
Cons:
- Not suitable for heavy-duty projects, limiting its use for more robust applications.
- Performance decreases on cylindrical surfaces, which may restrict some uses.
- Waiting period required for optimal bond strength after installation.
Magnetic Tape Roll (1” Wide x 12 ft Long) with 3M Adhesive Backing
Magnetic Tape, 12 Feet Magnet Tape Roll (1'' Wide x 12 ft Long), with 3M Strong Adhesive Backing...
- HIGH QUALITY MAGNET TAPE: Objects weighing up to 1.5 oz (~50 gram) can be held easily with a short strip. Add several or longer strips for heavier things.
- 3M STRONG ADHESIVE BACKING: Premium 3M adhesives are made for sticking quickly and firmly while last for a long time. Ideal for clean, smooth and uniform surfaces.
- 12 FEET MAGNET TAPE: Big Value packed into a box for easy storage. Use short strips or for heavier items choose more strips to hold anything in place!
For teachers and DIY enthusiasts, the Magnetic Tape Roll (1” Wide x 12 ft Long) with 3M Adhesive Backing is an unbeatable choice. This magnetic tape is perfect for various projects, from classroom displays to home organization. With a strong adhesive backing, it adheres quickly to clean surfaces, providing a reliable hold. This tape can support lightweight objects, like scissors or bookmarks, weighing up to 1.5 oz with just a short strip. Its 12-foot length means you’ll have plenty for multiple creative tasks. Store it conveniently in its box, and say goodbye to clutter while keeping everything in easy reach.
Best For: Teachers, DIY enthusiasts, and anyone looking to organize their space efficiently.
Pros:
- Strong Adhesive: Premium 3M backing provides a quick and lasting hold on clean surfaces.
- Versatile Use: Suitable for various applications, from classroom displays to home organization.
- Ample Length: 12-foot roll offers enough tape for multiple projects and creative tasks.
Cons:
- Weight Limit: Can only hold objects weighing up to 1.5 oz per short strip, which may limit usage for heavier items.
- Surface Requirement: Needs clean, smooth surfaces for effective adhesion, may not work well on textured or dirty surfaces.
- Potential Messiness: If not cut cleanly, the tape edges may fray, leading to an untidy appearance.
Zubebe Adhesive Magnet Tape Roll (0.75 Inch Wide x 26 Feet Long)
Sale
Zubebe Magnet Tape Roll (0.75 Inch Wide x 26 Feet Long) Adhesive Flexible Magnetic Strip Tape...
- Sufficient to Meet Your Needs: you will get 3 pieces of magnet tape rolls, with adhesive backing and tape dispenser; Sufficient quantity will meet your using needs, and...
- Easy to Cut: our adhesive magnetic tape is equipped with tape dispenser, easy for you to cut, you can cut the length you need without scissors, can effectively reduce the...
- Reliable Material: our flexible magnetic strip is mainly made of reliable magnet material, safe and sturdy, with fine workmanship, can be firmly attached to smooth...
Searching for a reliable adhesive solution? Search no further than the Zubebe Adhesive Magnet Tape Roll. This roll measures 0.75 inches wide and 26 feet long, offering plenty of versatile options. You’ll find three rolls in one pack, making it perfect for family projects or sharing with friends. The included tape dispenser allows for easy cutting, eliminating the need for scissors and reducing waste. Made from durable magnetic material, it adheres firmly to smooth surfaces without fading. Lightweight and portable, you can take this tape wherever your creative projects lead. It’s a practical choice for remodeling, crafts, or organizing.
Best For: Families and DIY enthusiasts looking for a versatile adhesive solution for various projects.
Pros:
- Three rolls included offer ample supply for multiple uses and sharing.
- Tape dispenser allows for convenient cutting without the need for scissors, enhancing efficiency.
- Durable and reliable magnetic material ensures strong adhesion to smooth surfaces.
Cons:
- Limited width of 0.75 inches may not be suitable for larger projects.
- Adhesion may vary on rough or textured surfaces, potentially reducing effectiveness in some applications.
- Not reusable once applied, leading to potential waste if cuts are not utilized fully.
Super Sticky Magnetic Tape (10 feet x 1/2 inch)
Sale
Sticky Magnetic Tape (10 feet x 1/2 inch) - Stong Magnet Strip with Adhesive Backing for DIY...
- STRONG ADHESIVE FOR LIGHTWEIGHT USE: Features a durable adhesive backing designed for lightweight applications such as crafts, labeling, and organizing. Not suitable for...
- EASY APPLICATION WITH PROPER SETTING TIME: Clean and dry the surface before applying. Press firmly and allow 24–72 hours curing time for best adhesion. Performance may...
- CUSTOMIZABLE LENGTH FOR VERSATILITY: Easily cut the magnetic tape to your desired size for flexible use in home, office, or DIY projects. Best suited for smooth, flat...
If you’re a teacher, student, or crafter, the Super Sticky Magnetic Tape (10 feet x 1/2 inch) is a practical solution for your organizing needs. This strong magnet strip features a premium 3M adhesive backing. It’s easy to cut, so you can tailor it to your project. You’ll find it sticks well to surfaces like fridges and whiteboards, making it versatile for different tasks. It can hold about 30-40 grams, reaching 90% strength in just 24 hours. To guarantee it sticks well, clean surfaces first and press firmly after applying. With 10 feet of tape, you’ll have plenty for all your needs.
Best For: This product is best for teachers, students, nurses, office workers, and crafters who need an effective organizing tool.
Pros:
- Designed with a strong 3M adhesive backing for reliable sticking.
- Extra-long 10-foot roll provides ample tape for multiple projects.
- Easily customizable by cutting to desired lengths for specific applications.
Cons:
- May require surface cleaning prior to application for optimal adhesion.
- The holding capacity of 30-40 grams may not be sufficient for heavier items.
- Full adhesive strength takes up to 72 hours to fully develop.
Magnetic Tape Roll 40 Feet with Self Adhesive Backing
Towjug Magnetic Tape Roll 40 Feet with Self Adhesive Backing, Flexible Sticky Magnet Strips for...
- USING TIPS: When you want to use the magnet tape to organize some metal item,pls make sure the item surface is flat, if the item is cylindrical,It will not be able to...
- VERSATILE APPLICATIONS: Our magnetic tape is perfect choice for teachers, students, nurses, office workers, DIY enthusiasts, moms, craft artisans, and anyone who loves to...
- EASY TO CUT AND INSTALL: The magnetic strip can be easily cut and installed. The adhesive allows for easy mounting.
Looking to streamline your organization? The Magnetic Tape Roll, 40 feet long, is your go-to solution. With a width of 0.5 inches and a thickness of 0.06 inches, it fits neatly into various projects. The 3M self-adhesive backing guarantees easy application; just clean the surface and stick it on. For best results, use flat surfaces, as cylindrical items may not adhere well. This tape’s versatile enough for students, teachers, and DIY enthusiasts, making it perfect for organizing lightweight metal objects. Remember to allow 24 hours for partial bonding before hanging items securely. It’s easy to cut, making installation simple!
Best For: This magnetic tape is best for teachers, students, DIY enthusiasts, and anyone looking to organize lightweight metal items in homes or offices.
Pros:
- Easy to use: Features 3M self-adhesive backing for simple application.
- Versatile: Suitable for a variety of organization tasks in different environments.
- Customizable: Can be easily cut to the desired length for different projects.
Cons:
- Limited weight capacity: Not suitable for heavy projects or substantial metal items.
- Surface requirements: Best used on flat surfaces; may not adhere well to cylindrical items.
- Adhesion time: Requires 24-72 hours for optimal strength before hanging objects.
Dowling Magnets Adhesive Magnet Tape (25 ft x .75 in)
For those starting on craft projects or organizing photos and papers, the Dowling Magnets Adhesive Magnet Tape (25 ft x .75 in) may be the ideal solution. This ultra-thin dark gray tape is perfect for delicate tasks. The light adhesive on one side minimizes damage to your photos and papers, so they stay intact. Since it’s a continuous 25-foot roll, you won’t run out mid-project. The bright dispenser features a built-in steel serrated cutter, allowing you to cut the exact length you need without scissors. Remember, for the best attraction, align both pieces horizontally or vertically for maximum performance.
Best For: Individuals engaged in craft projects or those looking to organize photos and papers without causing damage.
Pros:
- Ultra-thin design makes it ideal for delicate tasks without adding bulk.
- Light adhesive minimizes damage to photos and paper, preserving their integrity.
- Continuous roll of 25 feet allows for larger projects with less interruption.
Cons:
- Low holding power may not be suitable for heavier items.
- Requires proper alignment for effective attraction, which may be inconvenient for some users.
- Adhesive may not adhere well to all surfaces, limiting versatility.
Linone Magnetic Tape Roll (15 Feet × 1/2 Inch)
Linone Magnetic Tape, 15 Feet × 1/2 Inch Magnet Tape Roll - Stong Magnet Strip with Adhesive...
- Make Things Magnetised - Magnetic tape with adhesive backing makes it easy to display classroom materials, crafts, and tools on the fridge or magnetic whiteboard...
- 3M Strong Adhesive Backing: Premium 3M adhesives are made for sticking quickly and firmly while last for a long time. Ideal for clean, smooth and uniform surfaces
- Easy to Use - Magnetic strips are easy to cut, cut to your desired length, peel off the adhesive backing and stick them to a smooth surface for a quick and easy magnetic...
The Linone Magnetic Tape Roll (15 Feet × 1/2 Inch) is a versatile tool that’s perfect for teachers and DIY enthusiasts. This strong magnet strip features an adhesive backing, making it easy to apply. You can cut it to your desired length, allowing you to customize it for various projects. The premium 3M adhesive guarantees a firm hold on clean, smooth surfaces, so you can trust it won’t peel off easily. It’s ideal for organizing refrigerators, creating classroom materials, or enhancing DIY crafts. With 15 feet of tape, you’ll have ample supply for all your creative ideas.
Best For: This product is best for teachers, homeowners, crafters, and anyone looking to organize or enhance DIY projects.
Pros:
- Strong magnet strip with easy-to-use adhesive backing for quick application.
- Premium 3M adhesive ensures long-lasting durability on smooth surfaces.
- Extra-long roll (15 feet) provides ample tape for various project needs.
Cons:
- May not adhere well to rough or uneven surfaces.
- Limited to magnetic applications, which may not suit all projects.
- Requires a clean surface for optimal adhesion; dirt or dust can affect effectiveness.
10 Feet Magnetic Tape Strips with 3M Adhesive Backing
Towjug 10 Feet x1/2 in Magnetic Tape Strips Roll with Adhesive Backing, Flexible Sticky Magnet Tape...
- USING TIPS: When you want to use the magnet tape to organize some metal item,pls make sure the item surface is flat, if the item is cylindrical,It will not be able to...
- VERSATILE APPLICATIONS: Our magnetic tape is perfect choice for teachers, students, nurses, office workers, DIY enthusiasts, moms, craft artisans, and anyone who loves to...
- EASY TO CUT AND INSTALL: The magnetic strip can be easily cut and installed. The strong adhesive allows for easy mounting.
Designed specifically for a variety of everyday tasks, the 10 Feet Magnetic Tape Strips with 3M Adhesive Backing are perfect for teachers, students, and DIY enthusiasts alike. Each roll measures 10 feet long and 1/2 inch wide, with a thickness of 0.06 inches. You can easily cut the tape to fit your needs, making it great for customizing your organization. These strips are ideal for keeping metal items organized on flat surfaces. Just remember, they’re not effective on cylindrical objects due to limited contact. For the strongest bond, clean the surface and wait 24 hours after installation to achieve maximum strength.
Best For: This product is best for teachers, students, office workers, DIY enthusiasts, and anyone looking to organize metal items on flat surfaces.
Pros:
- Customizable Length: The tape can be easily cut to the desired size for various applications.
- Strong Adhesive: Equipped with 3M backing for a reliable bond when properly applied.
- Versatile Use: Suitable for a wide range of users, including professionals and home organizers.
Cons:
- Limited Effectiveness on Cylindrical Objects: Not suitable for use on rounded surfaces due to reduced contact area.
- Not for Heavy Projects: Designed for lighter tasks, not intended for heavy-duty applications.
- Curing Time Required: Needs 24 hours to achieve significant strength, which may delay usage.
Factors to Consider When Choosing a Magnetic Tape Roll

When choosing a magnetic tape roll, you’ve got to contemplate several key factors. Length and width options will determine how much surface area you can cover, while adhesive strength affects how well it sticks. Think about the tape’s magnetic holding capacity, surface compatibility, and how easily you can cut or customize it to fit your needs.
Length and Width Options
Selecting the right length and width for your magnetic tape roll is essential for success in your projects. Magnetic tape typically ranges from 10 feet to 40 feet in length, catering to small and large tasks alike. Width options usually vary from 0.5 inches to 1 inch, allowing you to choose based on the weight and size of the items you want to hold. If you need a custom fit, remember that some tapes can be easily cut to specific lengths. The thickness ranges from 1/16 inch to 0.06 inch, with thicker options offering better magnetic strength. By choosing the appropriate length and width, you guarantee effective support and adhesion for organizing or displaying your items securely.
Adhesive Strength and Type
Adhesive strength plays an essential role in the effectiveness of magnetic tape rolls. A strong adhesive backing guarantees that the tape holds items securely. Many options, like those featuring 3M adhesive, provide reliability and longevity. Thicker adhesives typically offer better durability, especially on clean, smooth surfaces. It’s vital to take into account the specific type of adhesive, as not all perform well on uneven surfaces or with heavier objects. Most tapes suggest allowing up to 24 hours for maximal adhesion, achieving around 90% strength, while full bond strength may take 72 hours. Always check product specifications to verify the tape suits your intended application, as this can greatly impact its performance.
Magnetic Holding Capacity
Understanding magnetic holding capacity is essential, especially if you plan to use magnetic tape rolls effectively. Magnetic tape rolls can support light objects weighing up to 1.5 oz, or about 50 grams, especially when using short strips. Choosing thicker tape usually offers a better magnetic grip than thinner options. Make sure the tape contacts flat surfaces for top-notch adhesion, as they yield stronger holding capacities compared to cylindrical or uneven surfaces. To boost holding power, increase the contact area by applying multiple strips or wider tape. Additionally, the adhesive quality matters; premium adhesives, like those from 3M, provide stronger initial bonds and lasting holds once fully cured. So, consider these factors for successful projects.
Surface Compatibility Considerations
The performance of magnetic tape rolls heavily relies on the surfaces you’re working with. For best results, choose clean, smooth surfaces—rough or uneven areas can weaken adhesion. It’s crucial to match the tape with the surface material; certain adhesives don’t bond well with specific types. Before applying, verify surfaces are free of dust, dirt, and moisture to maximize adhesion. Cleaning with a cloth is a good idea. Avoid using magnetic tape on cylindrical or textured surfaces, as the contact area won’t provide enough grip. To achieve maximum strength, allow 24 to 72 hours for the adhesive to set completely before attaching any objects. This waiting period helps verify your projects are sturdy and reliable.
Cut and Customization Ease
When you need to customize magnetic tape rolls for your projects, ease of cutting is a key factor to evaluate. Many tapes allow for simple cutting with scissors or knives, helping you adjust the tape to your specific needs. Some options come with built-in dispensers. These dispensers let you cut the tape to your desired length, eliminating the hassle of finding tools and reducing waste. Most magnetic tape is designed for clean surfaces, making the cutting process easier. However, keep in mind that thickness can vary. Thicker rolls, while more durable, may be slightly harder to cut accurately. Customizable lengths make magnetic tape versatile for various uses, from crafts to organization. Choose wisely for your project’s requirements.
Application Versatility and Use
While selecting a magnetic tape roll, consider the many applications it can serve in your projects. Magnetic tape is great for organizing metal items, whether in a workshop or a classroom. You can cut many types of magnetic tape to your desired lengths, allowing for simple customization. Adhesive-backed tape works best on clean, smooth surfaces, ensuring a secure bond. This tape can hold lightweight objects, like scissors and keys, without risk. When choosing, think about thickness and adhesive strength. For instance, thicker tape may provide better holding power for larger items. Overall, assess your project’s needs—pick a magnetic tape that fits, and it’ll come to the rescue for a variety of tasks.
Material Quality and Durability
Choosing the right material quality and durability in a magnetic tape roll can greatly impact your project’s success. Look for flexible magnetic materials, as they easily conform to different surfaces without breaking. The adhesive backing is vital: premium adhesives, like 3M, create strong, long-lasting bonds when applied properly.
Thickness matters too; generally, thicker tape offers enhanced holding power and longevity compared to thinner options. Make certain you select tape designed for clean, smooth surfaces, as this promotes better adhesive bonds. Remember, regularly testing the magnetic strength and adhesive quality helps guarantee your tape remains effective over time. By prioritizing these factors, you’ll make certain your projects are not only efficient but also durable and reliable.
Frequently Asked Questions
Can Magnetic Tape Be Used Outdoors?
Yes, magnetic tape can be used outdoors, but be cautious. Choose a weather-resistant tape, ideally one that’s rated for outdoor use. Look for products that specify UV resistance and strong adhesive backing. For example, a tape that handles temperatures from -20°F to 120°F is preferable. Remember, while magnetic tape can hold lightweight items securely, it may not perform well in extreme conditions, so always test it first in your specific outdoor environment.
Is Magnetic Tape Safe for Kids?
Yes, magnetic tape is generally safe for kids. It’s typically made from non-toxic materials, but supervision is key. When using it for crafts or projects, guarantee small pieces aren’t accessible, as they can be a choking hazard. Measure the tape to avoid sharp edges. For example, strips around 1 inch wide minimize risks. Always opt for products that meet safety standards. That way, you can embrace creativity while keeping safety in mind.
How Do I Cut Magnetic Tape Cleanly?
To cut magnetic tape cleanly, use a sharp pair of scissors or a utility knife. Measure the desired length, marking it with a pencil for accuracy. Place the tape on a cutting mat or a thick cardboard surface to protect your workspace. Cut straight down, applying even pressure. If you need smaller strips, repeat the process. Always make certain the blades are sharp; dull blades can lead to jagged edges.
Can Magnetic Tape Be Painted Over?
Yes, you can paint over magnetic tape, but it’s tricky. Standard paints might not adhere well, so it’s best to use spray paint designed for plastics or flexible surfaces. Clean the tape first to remove any dirt or oils. Apply light coats to avoid clumping. Let each coat dry completely before adding another. Remember, testing on a small piece first guarantees you get the desired look without ruining the tape’s magnetic properties.
How Do I Remove Adhesive Residue From Surfaces?
To remove adhesive residue from surfaces, start by applying rubbing alcohol or vinegar with a cloth. Let it sit for a few minutes to soften the adhesive. Next, gently scrape it off with a plastic spatula or your fingernail to avoid damage. For stubborn spots, repeat the process or use a commercial adhesive remover. Always test in a small area first, ensuring the surface isn’t harmed before tackling the whole residue.







