10 - 17" diameter screen discs. 100 grit. Designed for a floor buffer or rotary floor machine. Use to remove old finishes and/or wax, between coats of finish, and to restore worn areas of old wood floors Can also be used to remove paint, varnish, wax and glues from hardwood, concrete, stone and tile floors Sharp silicon Carbide grain imbedded into mesh cloth Available in grits 60 through 150 for all your sanding needs