3M 31363 – 150 Grit Cubitron™ II Hookit™ Clean Sand Disc (3 in, 50 Pack)

3M 31363 150+ Grit Cubitron™ II Hookit™ Clean Sand Disc (3 in, 50 Pack) is a high-performance abrasive sanding disc designed for surface preparation, material removal, and refinement in automotive collision repair and metalworking applications. Featuring advanced Cubitron™ II ceramic abrasive grain, this clean sand disc delivers fast, controlled cutting action with reduced heat buildup and longer life compared to traditional abrasive discs — ideal for refining surfaces prior to painting, coating, or polishing. Equipped with Hookit™ hook-and-loop backing, the disc allows for quick changes and secure attachment to compatible 3-inch backing pads and sanders, making it a reliable choice for professional body shops, fabrication shops, and refinishing technicians working in tight or detailed areas. The 150+ grit provides a balanced combination of material removal and surface finish quality.

Key Features

• Abrasive: Ideal for surface preparation and material refinement
• Abrasive: Self-sharpening grain for fast, cool cutting and extended service 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.