Demolition Hammer 1) it used to break concrete ,stone ,road surface etc 2) the safety of operation, convenient and reliable Demolition Hammer1) Input Power :2000W2)Item No. is CH0023)Frequency :50-60HZ4) Volatage: 110V-230V5)Packing is metal case or BMC case .means: 71.5x17x31cm/1pc/ctn metal case 86x33x19cm/1pc/ctn BMC case