"3X" HOLD HOOK & SAND DISC Hook & loop backing for quick and easy disc change Lasts 3x longer than conventional aluminum oxide, and has consistent finish and superior cut rate Non-pigmented, waterbased zinc stearate (anti-clog), open coat for reduced loading and no finish contamination Patented, ceramic alumina abrasive, P-graded (80-320) Patented, universal vac hole pattern fits 5 & 8 hole vac sanders Unique fiber reinforced backing is edge tear resistant