3M Hookit Blue Abrasive Disc 321U, 36148, 3 in, 240 grade, Multi-hole, (50 discs/carton) Case of 200

• 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 expertise with a Hookit attachment system for easy disc changes and secure fit.

Designed for efficiency, the 321U model supports quick removal and reattachment, making it ideal for busy shops. Its compatibility with Hookit disc pads ensures a smooth workflow during paint prep and coatings removal.

Precise 240 Grade Sanding

This abrasive disc features a 240 grade, perfect for fine sanding tasks and finishing work. The grade ensures a balanced cut that prepares surfaces without over-sanding or damaging the material.

Use the 240 grade disc for blending primer or smoothing filler, achieving a professional finish. This grade fits well in a variety of applications where controlled abrasion is key.

Compact 3 Inch Size

The disc measures 3 inches in diameter, making it suitable for detailed sanding and tight spaces. This size offers maneuverability without sacrificing surface coverage during sanding jobs.

Its compact dimension works well with most handheld sanders and is especially useful for spot repairs or small surface areas. The 3-inch size balances control and efficiency.

Multi-Hole Dust Extraction

The multi-hole format enhances dust extraction, keeping the sanding surface cleaner and extending disc life. This pattern improves airflow and reduces clogging compared to standard hole configurations.

With 3M's multi-hole design, dust is efficiently removed during sanding, which helps maintain cutting performance. This feature supports a cleaner work environment and better finish quality.

Bulk 200 Discs Carton

Available in a case of 200 discs, this pack size is ideal for high-volume use or large projects. Buying in bulk ensures you have enough discs on hand for continuous work without frequent reordering.

The carton contains 50 discs per smaller pack, making it easy to organize and distribute across different workstations. This quantity supports professional shops needing consistent supply.