Combi hammer drilling capacity concrete 50 mm torque 120 nm blows per minute 1 950 bpm max impact energy 27 j max series metabo khe power 1 700 watt gear 1 speed tool holder sds max weight 118 kg idle speed max 250 rpm blow count max 1 950 countsmin torque max 120 nm special features rotation stop safety clutch anti vibration power supply mains operation impact force 20 joule operating voltage 230 v number of gears 1