Detailed Product Description Impact DrillDes.Impact DrillBrandBOTHModelHD0837Concrete13MMSteel13MMWood20MMRated Input710WRated Voltage100/110V;220/230VFrequency50~60 HZNo-load Speed0-2800 RPMWeightSpeed ControlSteplessRotationCounterCertificationCE, TUV, GS, UL,CCC