3M Hookit Blue Abrasive Disc 321U Multi-hole, 36182, 6 in, 500, 50 discs per carton, 4 cartons per case

• A best-in-class abrasive for a variety of applications
• Anti-loading coating prevents dust and debris from clogging the cutting surface
• Discs available in mutli-hole pattern for excellent dust extraction or in no-hole format
• Engineered ceramic mineral blend is balanced for maximum abrasive performance in its class
• Upgraded resins improve durability and finish

The 3M Hookit Blue Abrasive Disc 321U delivers best-in-class performance at every stage of paint prep and coatings removal. Premium aluminum oxide mineral abrasive is blended with ceramic grain for a full range of sanding applications. The multi-hole discs feature a specially-designed pattern that reduces loading, extends disc life and aligns with most backup pads. Hookit attachment makes disc changes easy. Best-in-Class Performance in Every Grade Part of our full line of 3M Blue Abrasives, the 3M Hookit Blue Abrasive Disc is engineered for best-in-class cut, life and efficiency across your entire shop. The disc features a tough ceramic blended with premium aluminum oxide mineral for just the right balance. 3M Blue Abrasives deliver consistently excellent results in a minimum amount of time, on jobs ranging from aggressive paint removal and fresh filler sanding to blend preparation and sanding primer. Discs are available in a wide range of sizes and grades. Dust Extraction and Anti-Loading Features Enhance Performance and Life The multi-hole pattern discs are specially designed to capture dust and keep it away from the abrasive surface. This specially-designed hole pattern reduces loading and extracts dust more efficiently compared to standard 6- or 7-hole disc configurations. It includes alignment guides across the disc, making it fast and easy to align with nearly any backup pad. The mineral blend on the 3M Hookit Blue Abrasive Disc is bonded using upgraded resins for enhanced durability. An anti-loading coating helps keep dust from gathering between the abrasive grains for a faster cut and for consistent performance throughout the life of the disc. Our Hookit Attachment System The Hookit attachment system has a hook-and-loop feature which makes disc attachment, removal, and re-attachment clean and easy. It also facilitates use and re-use of the disc for maximum product life. Hookit discs have a brushed nylon loop backing of the type most commonly used in everyday hook-and-loop applications. 3M Hookit disc pads (sold separately) feature hooks which grip the brushed nylon loop backing. It’s simple: just attach the disc and start sanding. The disc removes just as cleanly and easily. The Hookit system is designed for work spaces and applications where adhesive backed discs may become contaminated by dust, dirt, or debris. Better Science for Better Sanding from 3M Our 3M Blue Abrasives family is designed as a cost-effective, high-performance upgrade for any sanding application in coatings removal and paint preparation. From its balanced, engineered mineral blend to its multi-hole pattern option for dust extraction, our 3M Hookit Blue Abrasive Disc is another way that 3M applies science to deliver best-in-class performance for professionals.

Reliable 3M Hookit Performance

The 3M Hookit Blue Abrasive Disc 321U is designed to deliver consistent, best-in-class results. This model combines 3M’s trusted Hookit attachment system with a premium abrasive formula, ensuring easy disc changes and reliable sanding performance.

With the 321U model, you get a multi-hole disc that fits perfectly with most backup pads. The Hookit system’s hook-and-loop backing makes attaching and removing discs quick and clean, ideal for professional use.

Multi-Hole Dust Extraction

This 6-inch abrasive disc features a multi-hole pattern that enhances dust extraction during sanding. The holes are strategically placed to reduce clogging and keep the abrasive surface clear, improving cutting efficiency.

Compared to standard 6- or 7-hole discs, this 321U multi-hole design helps extend disc life and maintain consistent performance. It’s especially useful in applications where dust control is critical.

Durable Ceramic Mineral Blend

The 3M Hookit Blue Abrasive Disc 321U uses an engineered ceramic mineral blend balanced for maximum abrasive performance. This blend combines ceramic grain with premium aluminum oxide for effective sanding across many tasks.

This durable mineral mix is bonded with upgraded resins that improve the disc’s lifespan and finish quality. It’s suitable for paint prep, coatings removal, and filler sanding, delivering reliable results every time.

Pack Size and Format

Each carton contains 50 discs, and the product is sold in cases of 4 cartons, totaling 200 discs per case. This pack size supports high-volume sanding needs and helps keep your workspace stocked efficiently.

The discs come in a 6-inch size, making them compatible with a wide range of sanding tools. The Hookit attachment format ensures easy handling and reuse, reducing downtime during projects.

Anti-Loading Coating Benefits

An anti-loading coating on the 3M Hookit Blue Abrasive Disc 321U prevents dust and debris from clogging the cutting surface. This feature keeps the disc cutting fast and consistent throughout its life.

By reducing loading, the coating helps maintain sanding efficiency and extends disc life. This makes the 321U a cost-effective choice for professionals needing reliable performance in demanding environments.