This cordless metal construction screwdriver is a fundamental new development for fastenings in the field of metal construction. With its high power reserves, it is suitable even for screw joints on steel beams. Its special ergonomic concept allows for high working speed and guarantees comfortable handling. The balanced centre of gravity, the specially formed grip and the pressing zone above ensure optimal power transmission and fatigue-free working without soreness. With the precisely adjustable torque coupling, overtightening of screws is prevented.