Air ratchet wrench ratchet screwdriver air requirement 310 lmin operating pressure 6 2 bar square holder 12 torque 40 nm plug in nipple 14 3 screwdriver bits extension piece 75 mm for screwdriver bits and for socket spanners cardan joint 7 socket spanners 9 10 11 13 14 17 19 mm carry case idle rpms 110 rpm power supply compressed air operation series metabo rs weight 12 kg