Features: 1) Dia x bore:(100~150) x (16~22) 2) Grain:Aluminum oxide, zirconium oxide, silicon carbide 3) Bond:Resin over resin 4) Cloth:X weight 5) Grit size:P80~320 6) Max speed:65m/s 5) Used fortrim or polish workpieces.Applied in ship auto mobile, machinery building, light industry, electrical, hosehold appliances, ornanent etc.