Impact screwdriver 921 allows loosening of stubborn screw connections. Combines the advantages of manual impact wrenches, compact tools and screwdrivers with pound-thru blade. Impact wrench function offers a loosening moment of up to 25Nm without loss via the pound-thru blade. Robust bit holder allows the mounting of different specialised bits for various screw profiles. Chrome Molybdenum Steel Construction Ergonomic Handle Impact Wrench & Screwdriver Functions Manual Impact Wrench Function can be Switched On & Off Pound-Thru Blade for Complete Power Transmission Chrome Molybdenum Steel Construction Ergonomic Handle Impact Wrench & Screwdriver Functions Manual Impact Wrench Function can be Switched On & Off Pound-Thru Blade for Complete Power Transmission