High Quality Material: Made of heat treated and forged chrome vanadium steel, polished finish resists corrosion. 14pcs Socket Set E4, E5, E6, E7, E8 - 5pcs 3/8" Drive Sockets E10, E11, E12, E14, E16 - 5pcs 1/2" Drive Sockets E18, E20, E22, E22 4. With a storage case for easy carrying and quick organization. All socket sizes are marked for easy identification. Wide Application: Suitable for auto repair and home maintenance, whether you are a mechanic or a DIY enthusiast. It is a must-have tool set in your garage. Note: The data are all measured manually, please allow 1-3cm error due to different light and display, there may be some color differences, please refer to the actual item received.