ZIRC Plus R801 PowerLock Cloth Discs-Type I, 3 in Dia., 50 Grit

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 TP/I fit snap-on/snap-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.