3M Precision Sanding Sheets 3 2/3 in x 9 in, 220 grid, 6 Sheets/3PACK

(18 SHEETS TOTAL). Fine grits range from 150 to 220. Cool-cutting sandpaper sheets optimized for use on all surfaces have an open-coat ceramic abrasive applied to a paper backing. Compatible surfaces and substrates include paint, plastic, composites, gelcoat, fiberglass, and carbon steel.