3M 31473 Cubitron II 737U 5-Inch Multi-Hole Sanding Disc 320 Grit Purple

The 3M Cubitron II Hookit Clean Sanding Abrasive Disc 737U represents the pinnacle of automotive refinishing technology, combining precision-shaped ceramic grain with an advanced multi-hole dust extraction pattern. This 5-inch sanding disc features 320+ grit for fine finishing applications and a hook-and-loop backing for quick, tool-free disc changes.

Key Features:

• Electrostatically oriented triangular-shaped ceramic grain cuts up to 30% faster than conventional premium abrasives
• Precision-shaped grain structure self-sharpens during use for consistent cut rate and extended disc life
• Multi-hole pattern provides superior dust extraction when used with vacuum systems, reducing loading and improving finish quality
• Sharper cutting geometry requires less sanding pressure, reducing user fatigue and minimizing surface friction
• Film backing provides excellent tear resistance and conformability on contoured surfaces
• Hook-and-loop (Hookit) attachment system allows fast disc changes without tools
• 320+ grit rating ideal for final sanding before primer or topcoat application

This Clean Sanding disc is engineered for automotive paint preparation, body filler finishing, and primer sanding where a smooth, consistent surface is critical. The Cubitron II mineral technology delivers professional results with longer disc life and reduced material costs compared to traditional aluminum oxide abrasives.