Up to 50x more robust than a Bosch 2607001528 Extra Hard Bit Highly efficient for installers, electricians, metalworkers, and woodworkers: Robust 1/4" Impact rated Hex shank for use in impact driver and drill driver For driving screws efficiently, eg when installing all types of panels, equipment, and fixtures Scope of delivery: Bosch PRO Impact Set with Nutsetters and Pick and Click Index, PH2x50, PZ2x50, NS8x50, NS10x50, NS13x50 mm, 5 pcs, Weight: 0.27116858226 pounds, Manufacturer: Bosch