Milwaukee® Shockwave Impact Duty™ extractors are engineered with an optimized geometry to grip and remove the most demanding stuck, rounded over, rusted, painted on, stripped, and damaged fasteners. Included with this set are (5) 3/8 in. square drive Impact Duty™ extractors for common sized fastener heads 1/4 in. to 1/2 in. as well as a 1/4 in. to 3/8 in. SHOCKWAVE™ square socket adapter with up to 30X life™ for use in quick change impact drivers. The bits feature color-coded rings for quick and easy size identification and a retention holder to keep them organized. Broadly targeting cordless users, the Shockwave Impact Duty™ accessory line is Nt only ideal for heavy duty impact applications, but delivers a full system solution for all the user's drilling and fastening needs.