3M 33439, Cubitron ll Mini File Sanding Belt 60+

The 3M 33439, 60+ Mini File Sanding Belt contains a precision-shaped ceramic abrasive grain coated on a heavy duty backing w and resin bonded for heat resistance. Precision-shaped ceramic grain fractures into sharp points for faster cutting and is engineered to run cooler, reducing metal discoloration/oxidation and the chance of heat-related stress cracks.