35 Pc Impact Grade Power Tool Bit Set - S2 Steel Bits - 1/4" Hex - Storage Case Overview: Popular range of impact grade power tool bits and asories for the professional user. Forged from high quality steel. Specially heat treated CNC precision machined tips reduce stress and prevent cam-out under load. Torsion bits absorb impact and transfer maximum torque to the fixing. Features fully ground impact grade hex shank HSS 4341 drill bits. Includes Chrome Vanadium steel impact grade bit Holder, screw guide and nut setters. Supplied in storage case. Features: Popular range of impact grade power tool bits and asories for the professional user. Forged from high quality steel. Specially heat treated CNC precision machined tips reduce stress and prevent cam-out under load. Torsion bits absorb impact and transfer maximum torque to the fixing. Features fully ground impact grade hex shank HSS 4341 drill bits. Includes Chrome Vanadium steel impact grade bit holder, screw guide and nut setters.