Ultra Ceramic Plus PowerLock Cloth Discs-Type III, 4 in Dia., 36 Grit

Features: A ceramic alumina blend that cuts faster, reduces heat build up and outlasts aluminum oxide and zirconia in many applications | Strong, Y-weight 2-ply polyester backing provides excellent durability and grain adhesion | Type TR/III fit roll-on/roll-off plastic attachment system | All QC cloth discs are designed to run on back-up pads that are rated at or above the RPM of the grinder