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 not only ideal for heavy duty impact applications, but delivers a full system solution for all the user's drilling and fastening needs. Features: Optimized geometry for secure grip on rusted or damaged fasteners; Impact duty extractors with 3/8 in. drive and SHOCKWAVE™ socket adapter included; Color-coded band for easy size identification; Retention holder to keep bits organized; For common sized fasteners 1/4 in. to 1/2 in.; For use with a variety of tools; Up to 30X life