... , its backing can spread the pressure equally so as to reduce the risk during sanding, the special hidden anti-clog coating ... reduce the clogging of dust, suitable for dry sanding. Rough grit ... Alumina in grits: 60#, 80#, 100#, 120# Grit: 60#-2000# Usage: Furniture, wood, metal, filler, putty, electronic, autobody, paint etc.This ...