Bosch Custom case 40 Piece 1 4 in Impact Driver Bit Set Paint Mixer prevent "springy" effect when walking 204421193 prevent "springy" effect when walking Chipping hammers for horizontal Impact Tough™ bit design – both driver and drill bits are impact rated and provide longer bit life than standard impact bits Driver bit Xtended Torsion Zone – helps to absorb high torque of new impact drivers Black oxide coating on drill bits – provides lower fiction Sub Brand Custom case Brand Model Compatibility Fits most drill drivers Bit Length Set Shank Size 1 4 in Shank Type Hex Material Black oxide coated HSS Head Type Set Adaptor Included Yes Set Individual Set Double Ended No Warranty None Case Type Hard Package Quantity 40 CA Residents: Prop 65 Warning(s) No Number of Pieces 40