High Quality Adapter Sockets: Each adapter is made from heat-treated chrome vanadium steel and coated with manganese phosphate to resist rust and corrosion and ensure long life. Wide Application: Suitable for quick changing 1/4 inch chuck systems or directly into drill chucks. Each cordless drill in an electric groove driver. Convenient for quickly driving in nuts, screws and fasteners etc. Spring-loaded ball bearing on head holds sockets securely. Compatibility: Suitable for screwdrivers or power drills, features 1/4" quick-change chuck systems or straight into chucks Change your hand tool socket sets into impact/drive sockets. 1/2" drive and each with a set of 1/4 inch hex driver socket wrench adapters. So you can turn any drill into a power screwdriver with the extra reach. Specifications: 3-piece 1/4" drive adapter, 3/8" drive adapter, and 3-piece drive adapter. 1/2" drive and each with a set of 1/4 inch hex driver socket wrench adapters. So you can turn any drill into a