Perfect combination of power and strength Battery impact wrench GDS 18V-400 Professional is definitely distinguished in terms of power and resistance against tools offering average torque. It is an excellent choice for using M10 and M12 screws. The impact wrench, offering a torque of 400 Nm, has sufficient power to also tighten the screws in the maximum M20 size. The tool offers even more durability thanks to the longer service life of its critical components. The impact wrench, which is part of the Bosch Professional Heavy Duty line, is excellent for use in extremely difficult working environments. Key Product Characteristics The strongest model among tools offering average torque. Ideal for many screw-in applications. Thanks to the 400 Nm torque, it has sufficient power to tighten the M20 screws ( 30 mm nuts). Optimised durability thanks to longer life of critical components. The ABR (Auto Bolt Release) function facilitates disassembly by automatically stopping the tool after unscrewing the nut