3M Hookit Blue Abrasive Disc 321U Multi-hole, 36177, 6 in, 220, 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.

Trusted 3M Hookit Model

The 3M Hookit Blue Abrasive Disc 321U is a reliable choice for professionals needing consistent sanding performance. This model combines 3M’s trusted Hookit attachment system with a multi-hole design for efficient dust extraction.

Its 6-inch size fits most standard backup pads, making it versatile for various sanding tasks. The Hookit system allows quick disc changes, improving workflow and reducing downtime.

Multi-Hole Dust Extraction

Featuring a multi-hole pattern, the 3M 36177 discs excel at dust extraction, keeping the abrasive surface clear and effective. This pattern reduces clogging and extends the life of each disc during use.

Compared to standard 6- or 7-hole discs, these 50 discs per carton offer better dust removal, which helps maintain a cleaner work environment and improves sanding efficiency.

Grade 220 Abrasive Quality

These discs come in a 220 grade, ideal for a range of sanding applications including paint prep and coatings removal. The grade ensures a balance between aggressive cutting and smooth finishing.

With 4 cartons per case, each containing 50 discs, you get a consistent supply of this grade for ongoing projects, helping maintain quality results without frequent reordering.

Durable Ceramic Mineral Blend

The 3M Hookit Blue Abrasive Disc 321U uses an engineered ceramic mineral blend that enhances abrasive performance. This blend is balanced to deliver maximum cut and durability in its class.

Upgraded resins improve the disc’s lifespan and finish quality, making it suitable for tough sanding jobs while maintaining a smooth surface finish throughout its use.

Convenient Pack Size Format

Each case includes 4 cartons, with 50 discs per carton, totaling 200 discs. This pack size supports large projects and reduces the need for frequent restocking.

The 6-inch discs are designed for easy attachment and removal with the Hookit system, making them practical for busy shops that require quick changes and reliable sanding performance.