3M™ Tri-M-ite™ Drywall Sanding Sheets are die-cut to fit most drywall sanding tools. Made with sharp silicon carbide mineral for long-lasting performance. Use with Pole Sander. 100 Count Size: 4-3/16" x 11-1/4" Grade: 100 Grit Size: Medium Die cut drywall sanding sheet Waterproof Use with pole sander Made with sharp si