- 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 seeking consistent sanding results. This model combines 3M's proven abrasive technology with the convenience of the Hookit attachment system.
Designed for easy disc changes, the Hookit system uses a hook-and-loop backing that ensures quick attachment and removal. This 321U model supports efficient sanding across various applications.
Precise 320 Grade Abrasive
Featuring a 320 grade, this abrasive disc offers a fine sanding finish suitable for detailed paint prep and coatings removal. The grade balances cut speed with surface smoothness for quality results.
Its engineered ceramic mineral blend enhances abrasive performance, making the 320 grade ideal for tasks like fresh filler sanding and primer preparation.
Multi-Hole Dust Extraction
The multi-hole format of these 5-inch discs improves dust extraction during sanding. This pattern reduces clogging and keeps the abrasive surface clear for longer-lasting performance.
With a specially designed hole layout, the discs align easily with most backup pads, enhancing dust removal efficiency compared to standard hole configurations.
Durable 5 Inch Size
These abrasive discs come in a 5-inch diameter, a versatile size that fits many sanding tools and applications. The size supports both aggressive and fine sanding tasks.
The 5-inch discs are engineered with upgraded resins that improve durability and finish quality, ensuring consistent results throughout their use.
Bulk Pack Convenience
Available in a case of 200 discs, including 50 discs per carton, this pack size is ideal for busy shops or large projects. It ensures you have plenty of abrasives on hand to maintain workflow.
Buying in bulk also offers cost savings and reduces downtime from frequent reordering, making it practical for professional environments.
