High-quality socket adapter: Each adapter is made of heat-treated chrome vanadium steel and is coated with manganese phosphate to resist rust and corrosion and ensure a long service life. Wide application: Suitable for quickly changing 1/4-inch chuck systems or directly into drill chucks. Each cordless drill into a power groove driver. Convenient for quickly driving nuts, screws and fasteners, etc. The spring-loaded ball bearing on the head holds the sockets firmly. Compatibility: Suitable for screwdrivers or power drills, features 1/4" quick-change chuck systems or directly into drill chucks. Change your hand tool socket sets to impact/drive sockets. Specifications: 3-piece 1/4" drive adapter, 3/8" drive adapter and 1/2" drive adapter and each with a 1/4 inch hex screwdriver socket wrench adapter set. 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 1/2" drive adapter and each with a 1/4 inch hex driver socket wrench adapter set. So you can turn any drill into a power screwdriver with the extra reach. Size: 3-Piece Adapter/Black Features: 1. Suitable for 1/4" quick-change chuck systems or directly into drill chucks. 2. Converts any electric/cordless drill into a power screwdriver. 3. Portable phone for fast driving of nuts, bolts and fasteners, etc. 4. The spring-loaded ball bearing on the head holds the sockets firmly. 5. Widely used in home improvement, carpentry, and auto parts, specializing in machine repairs and so on. Specification: All sockets are standard 1/4" hex shank Package Includes: 1 x Socket Adapter (1/4" Hex to 1/4" Socket) 1 x Socket Adapter (1/4" Hex to 3/8") 1 x Socket Adapter (1/4" Hex to 1/2" Socket)