| SKU | 7100378151 |
|---|---|
| Legacy SKU | 60450003896 |
| UPC | 00068060066428 |
| Catalog Number | 37450 |
| Product Number | 521U |
3M Hookit Blue Abrasive Sheet Roll 521U is a paper-backed abrasive sheet roll with excellent performance and cut. It is available in a range of grades. The convenient sheet roll format can be sized as required.
- Excellent cut rate and performance
- E-weight paper backing is highly durable and withstands wear, pressure and damage
- Easy and reusable hook-and-loop system
- Convenient sheet roll form available in a variety of grades
Product Dimensions |
Imperial | Metric |
| Weight | 1.4864 lbs | |
|---|---|---|
| Width | 6-1/4 in | |
| Length | 6-1/4 in | |
| Height | 3 in |
Shipping Dimensions |
|
| Weight | 8.031 lb |
|---|---|
| Length | 16.25 in |
| Width | 6.8748 in |
| Height | 7.25 in |
| Color | Blue |
|---|
PRODUCT FAQ
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What is the grit of the 3M™ Hookit™ Blue Sheet Roll 37450, 36E?
Great question! The "36E" in the product name means this roll has a coarse 36 grit, ideal for heavy sanding and fast material removal.
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How wide and long is each sheet in this roll?
Each roll is 2-3/4 inches wide and about 8.7 yards (or approximately 70 mm x 8 meters), giving you lots of coverage for your projects!
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Can I use this sanding roll with my existing Hookit™ sanding block or tool?
Absolutely! This blue sheet roll uses our convenient Hookit™ attachment system, so it easily attaches to any compatible tool or hand block without fuss.
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How many rolls come in one case when I order?
One case comes with five rolls inside—plenty to keep you stocked up and ready for all your jobs!
The 3M Hookit Blue Abrasive Sheet Roll 521U is expertly engineered for professional sanding applications, particularly in the automotive collision repair industry. This versatile abrasive is designed to deliver outstanding results on a variety of substrates, including painted surfaces, primers, metals, and composite materials. Whether you are preparing a surface for painting or smoothing out imperfections, this sheet roll provides the performance and reliability you need.
Constructed with a robust E-weight paper backing, the 3M Hookit Blue Abrasive Sheet Roll 521U offers exceptional durability and resistance to tearing, ensuring a consistent and long-lasting cut throughout your project. The fast-cutting abrasive grains embedded in the sheet allow for efficient material removal, helping you achieve a smooth, even finish with less effort and time.
One of the standout features of this product is the innovative 3M Hookit system, which utilizes a convenient hook-and-loop attachment method. This system allows for quick and easy sheet changes, making the abrasive reusable and reducing downtime during your workflow. The secure attachment also ensures that the sheet stays firmly in place during use, providing optimal control and precision.
- Ideal for sanding paint, primer, metal, and composite surfaces in collision repair
- Durable E-weight paper backing for enhanced longevity and performance
- Fast-cutting abrasive for efficient material removal
- Hookit hook-and-loop system for easy, reusable application and quick sheet changes
- Consistent, high-quality finish with reduced risk of tearing

