Bulk Waterproof Silicon Carbide SandpaperIdeal for wet sanding between coats of paints, sealers, varnish, and other finishes. Features resin coating that outlasts ordinary glue bond sandpaper. 9 IN x 11 IN sheets. Packed 25 sheets per box.No. 03287: 1500B gritNo. 03280: 600B gritNo. 03281: 400B gritNo. 03282: 320B gritNo. 03283: 220B gritNo. 03284: 180B gritNo. 03285: 150B gritNo. 03286: 120B grit