The impact screwdriver 921 combines the advantages of manual impact wrenches, compact tools and screwdrivers with pound-thru blade. The impact wrench function offers a loosening moment of up to 25 Nm. The robust bit holder allows the mounting of different specialised bits for various screw profiles. The pound-thru blade ensures complete power transmission (zero loss). The impact wrench function and screwdriver function can be switched as required.