3M ProGrade Precision sandpaper uses Cubitron II ceramic alumina grain technology that cuts faster and lasts up to 15X longer than conventional sandpaper. The precision-shaped triangular grains continuously fracture to expose fresh cutting edges throughout the life of the sheet.

• Cubitron II precision-shaped ceramic grain for faster sanding
• No-Slip Grip backing prevents sliding and reduces hand fatigue
• Anti-clogging coating resists loading for extended sheet life
• Use wet or dry on wood, drywall, and metal
• 320 grit (extra fine) for final finish sanding and between-coat prep
• 9" x 11" sheets, 3-pack

Best for: Final finish sanding, between-coat prep on wood and fiberglass, and preparation for primer and paint.