with veriable speed ,carbon brush indicator light,superior quality DataGS,CE,EMC,ULStandard AccessoriesVoltage 220V/50HZ110V/60HZNo.NameQuantityCurrent 7.7A1wrenches1Rated power input1100W 2side handle1No load speed7000rpm7000rpm3 Dia of wheel230mm 4 Dia of hole22mm 5 Spindle diameter 14mm 6 Sound energydB(A) Sound pressuredB(A)Acceleration levelm/s2 Net weight ApprovelCE,GS,EMC