Use controlled screw tightening in the range 110 550 nm ideal for the light truck sector for use in all areas of industrial manufacturing features adjustable torque wrench with 34 single square drive for controlled clockwise tightening type ds no 8574 or double square drive for bi directional tightening type dsl no 8579 34 square drive with pin locking mechanism din 3120 b 20 iso 1174 acc to din en iso 6789 traceable to national standards automatic short path a