ZIRC Plus R801 PowerLock Cloth Discs-Type II, 4 in Dia., 120 Grit

Features : Self-sharpening, zirconia alumina abrasive with grinding aid provides cooler cut, longer life on hard to grind materials | Durable, Y-weight, 2-ply polyester backing stands up to demanding applications | Type TS/II fit turn-on/turn-off metal 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