3M 99420NA Sanding Sheet, 9 in x 11 in, Silicon Carbide, 400 Grit, 25 PK

The 3M Wetordry Tri-M-ite sheet, 413Q, is a silicon carbide, closed coat product bonded with a waterproof resin. It can be used wet or dry for sanding old finishes, fine featheredging, surface work or last final sanding step before priming.