Materials: Abrasives: aluminium oxide or silicon carbide Bond:resin over resin Paper: C ,D,E-weight Cloth:J,X,Y-weight Backed:Velcro or PSA Application: It is fixed on hard rubber disc of pneu-matic or electric tools.Grinding and polishing for wood,paint,metal and the coating of automobile’s surface. 粒度Grits:24-36-40-60-80-100-120-150-180-220-240-280-320-400 圆形Discs,三角形Delta,长方形Stripes,鼠标形Mouse