Air impact wrench gear 1 speed power supply compressed air operation torque max 685 nm idle speed max 7 500 rpm gear 1 speed torque levels 3 weight 3 kg tool holder 12 inch external square max screw diameter 16 mm noise level 94 db vibration 1224 ms series hazet 90xx air consumption 127 l min air pressure 6 3 bar port 14 schlauchdurchmesser 10 mm