Features:* Made of chrome vanadium steel suitable for heavy impact drivers.* Spring-loaded ball bearing on the head holds the sockets securely.* Suitable for high-speed chuck systems or directly into a drill chuck.* Change the hand socket set to a driven socket set. This set is perfect for your impact wrench or drill bits, and allows you to replace your ratchet with power tools.* These struck-ready adapters are designed for the most demanding applications.* The hex shank fits all quick change chucks as well as standard drill chucks. Specifications:* Material: Chrome Vanadium Stainless Steel * Surface Treatment: Sandblasting * Color: Silver * Shank: 1/4" (6.35mm) * Total Length: About 50mm * Including: 1/4''(6.35mm) 3/8''(9.5mm) 1/2''(12.7mm)* Quantity: 3pcsUsage:Suitable for screwdriver chuck or electric tool screwdriver (hexagonal hole or three jaw chuck can be used) drive sleeve, mounting hexagonal connector can be converted to square head, which can be used for bushing installation, conversion. Package Included:3 * Socket AdapterNotes:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.