General description Each high-quality socket holder adapter is made of heat-treated chrome vanadium steel, coated with manganese phosphate to resist rust and corrosion, ensuring a long service life. This set is designed for quickly changing 1/4-inch chuck systems or directly into drill chucks, making it convenient for driving nuts, screws, and fasteners. Technical specifications Includes: 3-piece set with 1/4" drive adapter, 3/8" drive adapter, and 1/2" drive adapter Each adapter features a 1/4 inch hex screwdriver socket wrench adapter Compatibility and accessories Compatible with screwdrivers or power drills Features 1/4" quick-change chuck systems Usage Transforms any drill into a power screwdriver Ideal for quickly driving nuts, screws, and fasteners Other information The spring-loaded ball bearing on the head holds the sockets firmly