Milwaukee Shockwave Impact Duty Driver Bit Sets are engineered for extreme durability. Made from proprietary steel and heat treated to control hardness. Feature a geometric shock absorption zone to extend life. Forged tip allows for a secure grip and maximum contact eliminating stripping or slipping. Set includes (1) 6 In. magnetic bit holder, (1) compact magnetic bit holder, (2) Insert PH2 bits, (2) Insert SQ2 bits, (2) Insert T25 bits, (1) Insert 1/4 In. magnetic nut driver, (1) Insert 5/16 In. magnetic nut driver.