Features and Benefits: ?Wear Guard Tip protects fit over the life of the bit ?Optimized Shockzone absorbs peak torque and prevents breaking ?Custom Alloy76 Steel is engineered to extend bit life ?Precise Fit Custom Machined Tip prevents stripping and reduces wobble. ?Shockzones are optimized in both length and width per tip type for best performance across tip types. ?Laser hardening at the tip creates an outer protective shield for improved wear resistance. ?Customized geometry and heat treatment per tip type for best performance across tip types ?Up to 50X Life vs other impact bits ?Laser etched size for easy identification ?Designed for use with Impact Drivers and Drill Drivers. Milwaukee SHOCKWAVE Impact Duty Drive Guide Sets are engineered for extreme durability and up to 10x life. Made from proprietary steel and heat treated to control hardness, the SHOCKWAVE Impact Duty Drive Guide Sets are engineered for extreme durability and up to 10x life. Made from proprietary steel and heat treated to control hardness, SHOCKWAVE Impact Duty driver bits feature an innovatively designed geometric shock absorption zone to extend life. The forged tip allows for a secure grip and maximum contact eliminating stripping or slipping. Includes Milwaukee ECX bits with anti-strip tip designed for electrical fasteners. Drive guide with expandable sleeve guides long screws to reduce wobble for fast, straight driving. Functional case provides storage for insert bits and drive guide. Case can be used to gauge, strip and bend wire, as well as fasten screws. SHOCKWAVE Impact Duty driver bits feature an innovatively designed geometric shock absorption zone to extend life. The forged tip allows for a secure grip and maximum contact eliminating stripping or slipping. Includes Milwaukee ECX bits with anti-strip tip designed for electrical fasteners. Drive guide with expandable sleeve guides long screws to reduce wobble for fast, straight driving. Functional case provides storage for insert