Product Mix: Silicon carbide abrasive material, Non-woven, Resin over resinSize: 150(OD)*25(TH)*18(ID)mmDensity: 7P ( Medium ) Optional Grit: P320( Fine ), P240( Medium), P180#( Coarse) Feature:1.Anti-blocking and dissipate heat easily, without smearing or discoloring the work piece 2.Excellent self-sharpening3.High grinding efficiency and durablApplication: Used for polishing and grinding hardware, wood, plastic, and circuit board etc.Packing: 1Pc