Features:1. Adopting chrome vanadium steel material, the socket adapter is ofhigh harness, strong strength and long durability.2. The spring loaded ball bearing makes the adapter holds the socket firmly.3. 1/4inch hexagonal shank is suitable for all quick change chuck andstandard drill chuck.4. A great tool to change the hexagonal size into square size,convenient for the installation of socket.5. It can be installed on the pneumatic screwdriver, electric screwdriver, electric drills and more electric tools.Specifications:Material: chrome vanadium SteelAdapter size: 1/4", 3/8", 1/2"Overall Length: 65mm/2.56in, 65mm/2.56in, 73mm/2.87inWeight: Approx. 91gPackage Included:3 x Socket AdapterNote:1. Due to the difference between the monitors and light effect, thepicture may not reflect the actual colorof the item.2. Please allow small deviation due to manual measurement. Thanks foryour understanding.