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 Quality
The 3M Hookit Blue Abrasive Disc 321U Multi-hole is a reliable choice for professionals who demand consistent results. This model combines 3M's proven abrasive technology with the convenience of the Hookit attachment system for easy disc changes.
Designed for a variety of sanding tasks, this disc supports efficient paint prep and coatings removal. Its multi-hole format helps maintain performance by reducing dust buildup during use.
Optimal Grade And Size
This pack includes 5-inch discs with an 80 grit grade, ideal for medium sanding jobs. The grade balances aggressive cutting with smooth finishes, making it versatile for different surfaces.
Each carton contains 50 discs, and the case includes 4 cartons, providing a total of 200 discs. This quantity supports extended projects without frequent reordering.
Multi-Hole Dust Extraction
The 3M Hookit Blue Abrasive Disc 321U features a multi-hole pattern designed to improve dust extraction. This pattern helps keep the abrasive surface clear, preventing clogging and maintaining cutting efficiency.
Compared to standard 6- or 7-hole discs, this configuration offers better dust removal and aligns easily with most backup pads, enhancing overall sanding performance.
Durable Ceramic Mineral Blend
These discs use an engineered ceramic mineral blend that delivers maximum abrasive performance. The blend is carefully balanced to provide long-lasting durability and consistent cutting power.
Upgraded resins enhance the disc's toughness and finish quality, ensuring it withstands demanding sanding tasks while maintaining a smooth surface.
Convenient Hookit Attachment System
The Hookit attachment system allows quick and clean disc changes with its hook-and-loop design. This system supports easy removal and reattachment, extending the disc's usable life.
With a brushed nylon loop backing, these discs fit securely on 3M Hookit disc pads (sold separately), making them suitable for workspaces where adhesive discs might get contaminated.
