Features: *Made of Chrome Vanadium Steel Suitable for Heavy Duty Drivers. *Spring Loaded Ball Bearing on Head Holds Sockets Securely. *Suitable for Quick Change Chuck s or Directly into Drill Chuck. *Change Your Hand Socket Set Into A Driven Socket Set. *Perfect for your driver or drill, and allows you to replace your ratchet with a power tool. *These ready adapters are rated for the most demanding of applications. *The hex shank fits all quick change chucks as well as standard drill chucks. Specifications: *Material: Chrome Vanadium Steel *for treatment: Sandblasting *Color: Silver *Shank: 1/4''(6.35mm) *Size: (All socket-drive adapter are 1/4" hex shank) 1/4 * 25mm length --- can be converted to 6.35mm square head 1/4 * 30mm length --- can be converted to 6.35mm square head 1/4 * 50mm length --- can be converted to 6.35mm square head 1/4 * 65mm length --- can be converted to 6.35mm square head 3/8 * 50mm length --- can be converted to 9.53mm square head 3/8 * 65mm length --- can be converted to 9.53mm square head 1/2 * 50mm length --- can be converted to 12.7mm square head 1/2 * 73mm length --- can be converted to 12.7mm square head *Quantity: 2/3/8pcs How to use: Suitable for screwdriver handle or electric screwdriver tool (hexagonal hole or three jaw chuck can be used) drive sleeve, the installation of the hexagonal connector can be converted to square head, which can be used for the installation of the sleeve, The of conversion. Package Included: 2/3/8pcs * Socket Bit Adapter Notes: 1. The real color 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. High quality assurance: Each product undergoes strict quality testing to ensure that you can provide the best quality experience. User-friendly design: The product features and appearance are carefully designed, easy to operate, and suitable for various usage scenarios. Multifunctional practicality: It has a variety of practical functions to meet your diverse needs and improve the quality of life. Environmentally friendly materials: Made of environmentally friendly and safe materials, harmless to the human body, while paying attention to environmental protection. Excellent cost performance: Provide excellent quality at a reasonable price to ensure a shopping experience that is worth the money.