Features:_x000D_ 1. Each has been quenching heat treated ,sturdy and wear resistant._x000D_ 2. 1/4 " handle is suitable for all quick - change chuck and standard drill chuck._x000D_ 3. These shock resistant adapters can meet the most demanding applications. _x000D_ 4. Adopting chrome vanadium steel material, the socket adapter is of high harness, strong strength and long durability._x000D_ 5. Suitable for a screwdriver or electric screwdriver handle tools (hex hole or three jaw chuck) drive socket, can be used to install the socket, is a good accessories._x000D_ _x000D_ Specification:_x000D_ Condition: 100% Brand New_x000D_ Item Type: Socket Bit Adapter_x000D_ Material: Chrome Vanadium Steel CR-V_x000D_ Size: 1/2" 1/4" 3/8"_x000D_ _x000D_ Package List:_x000D_ 8 * Socket Bit Adapter_x000D_ _x000D_ Note:_x000D_ 1. Please allow slight error due to manual measurement. Thanks for your understanding._x000D_ 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.