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 inNvatively 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 inNvatively 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.