Pneumatic down-hole hammer, middle-low air pressure, no valve type structure, low air consumption Main Technical Parameters:TypeHole Dia(mm)Tool Dia. (mm)Air Consumption (m3/mm)Air pressure(MPa)Power(J)Frequency(Hz)Length(mm)WeightKgOuter Flat Rod(mm)WC5665563-40.5-0.650-6012-1491012Φ50WC7075-95663-40.5-0.660-8012-16103016Φ50,60WC8595-110853-40.5-0.680-12010-16111223Φ60,73WC110115-180102/1064-60. ...