3M 31463 – 320 Grit Cubitron™ II Hookit™ Clean Sand Disc (3 in, 50 Pack)

3M 31463 320+ Grit Cubitron™ II Hookit™ Clean Sand Disc (3 in, 50 Pack) is a high-performance abrasive sanding disc engineered for fine surface preparation and finish sanding in automotive collision repair and refinishing applications. Featuring advanced Cubitron™ II ceramic abrasive grain, this disc delivers precise, consistent scratch patterns while helping reduce heat buildup and glazing during sanding — ideal for refining surfaces prior to polishing or coating application, especially in tight or detailed areas. Designed with Hookit™ hook-and-loop backing, the disc allows for quick changes and secure attachment to compatible 3-inch backing pads and sanders, supporting efficient workflow in professional body shops and refinishing environments. The 320+ grit provides a balance of surface refinement and controlled sanding for smooth results.

Key Features

• Abrasive: Ideal for surface refinement and finish sanding
• Abrasive: Self-sharpening grain for consistent performance 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 fine sanding 50
• Pack: Professional quantity for collision repair and refinishing

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.