Features: High Grade Chrome Vanadium Steel Socket, and Longer Lifetime Chrome Plated for Finish to Anti-Corrosion High Hardness and Torque, fully meet standard 3/8" Socket Wrench, High Torque for using by Drivers and Socket Wrenches Specification: Name:3/8" Hex Socket Material: Chromium-vanadium Steel Deep Sockets: 8mm,9mm,10mm,11mm,12mm,13mm,14mm,15mm,16mm,17mm,18mm,19mm,20mm,21mm,22mm,24mm Color:silver Length:63mm Quantity:1pc Package contents: 1pc * Deep Socket Notes: 1.Transition: 1cm=10mm=0.39inch. 2. 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. 3. Please allow slight manual measurement deviation for the data. EXCELLENT PERFORMANCE: Our products are severely tested for durability by the manufacturer before leaving the factory. QUALITY MATERIALS: Made from durable, premium quality materials that have been rigorously tested by the manufacturer. REASONABLE DESIGN: our products are carefully designed by designers, easy to use and ergonomic. ACCURATE SIZE: well-made, accurate size and precise fit of the equipment you need. SATISFACTION GUARANTEE: Like all products, Please contact us with any questions or issues that you may have. We will be more than happy to assist you.