Irwin 93782 1-5/8" x 3/8" Square Drive Socket Adapter, Ball Lock Quickly converts any power drill or cordless screwdriver (even right-angle drills) to a powerful socket wrench. Ball retention design for quick change applications. Fits sockets with 3/8-inch adapter. Fits all power screw guns, cordless screwdrivers, variable speed power drills, and quick change adapters. Spring-loaded ball bearing locks on to sockets. Backed by the IRWIN lifetime guarantee. Made in the USA from global components. Ball retention design for quick change applications Overall length: 1-5/8"