3M 31361 – 80 Grit Cubitron™ II Hookit™ Clean Sand Disc (3 in, 50 Pack)

3M 31361 80+ Grit Cubitron™ II Hookit™ Clean Sand Disc (3 in, 50 Pack) is a high-performance abrasive sanding disc engineered for aggressive material removal and surface preparation in automotive collision repair, metalworking, and fabrication environments. Featuring advanced Cubitron™ II ceramic abrasive grain, this clean sand disc delivers fast cutting action, reduced heat buildup, and extended life compared to conventional abrasive discs — making it ideal for weld blending, paint removal, and other prep tasks on smaller surfaces and detailed areas. Designed with Hookit™ hook-and-loop backing, the disc enables quick changes and secure attachment to compatible 3-inch backing pads and sanders, improving workflow efficiency in professional body shops and refinishing applications. The 80+ grit offers strong stock removal while still allowing surface refinement where needed.

Key Features

• Abrasive: Great for material removal, weld blending, and surface prep
• Abrasive: Self-sharpening grain for fast, cool cutting and extended life
• Backing: Enables quick disc changes and secure attachment 3 in
• Diameter: Designed for use with standard 3-inch backing pads and sanders
• Design: Reduces heat buildup and glazing during sanding 50
• Pack: Professional quantity for frequent use

Frequently Asked Questions

What makes Cubitron II different from regular sandpaper?

Cubitron II uses precision-shaped ceramic grain that self-sharpens as it wears, cutting up to 2x faster and lasting up to 2x longer than conventional abrasives.

How long do Cubitron II sheets last?

Cubitron II typically lasts 2x or more compared to standard aluminum oxide abrasives because the ceramic grain self-sharpens rather than dulling.

How much material is on the roll?

Each roll provides 8.75 yards of 2.75-inch wide abrasive.