Material: The socket adapter is made of heat treated hardened chrome vanadium steel (Cr-V) to ensure long life through tough torque work without breaking or rusting Heavy duty construction to be compatible with screwdrivers most powerful percussion. Size: 1/4" 3/8" 1/2" drive adapter and each with a set of 1/4" hex socket wrench adapters. Convert any power tool set in one nut socket set.Different color-coded rings make it easy to choose the right one for you. Design: Spring-loaded ball lock ensures a tight fit in the driver's head to prevent slipping during use Specially machined double prong hex shank to fit securely in a hand screwdriver, drill or impact wrench. Multi-Function: This hex adapter is designed to provide a securely locked extension linked to your existing tool. Provides extra length to reach a multitude of hard to reach spaces. Attach these extension bars to any powered or cordless drill chuck or impact driver to turn them into a high speed nut driver. Usage: The impact socket adapter is a useful accessory for the conversion. Useful for automotive repairs, technicians, DIYers and hobbyists to use with sockets on tire nuts, lag bolts, hex screws at home, in the workshop or on the job site.