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 five 3/8 in square drive Impact Duty extractors for common sized fastener heads 1/4 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.