3M 99432NA Pro-Pak Drywall Sanding Sheet 100C-Grit, 4 3/16 by 11 1/4-Inch

Sharp, synthetic silicon carbide mineral cuts fast and smooth for long-lasting performance. Precut to fit most drywall sanding tools. Designed for sanding drywall joints, patching compounds, paint, and plaster. Packaging strong enough to use as storage container for unused sheets.