Quality Materials: This tool is made of high quality chrome vanadium steel. High temperature treatment during the whole process to prevent corrosion. Can withstand greater pressure without deformation. Strong Magnetism: The 16mm/14mm spark plug socket has many powerful magnets at both ends. The unique magnetic design ensures that the spark plug socket stays in place during installation and removal, without having to worry about losing it. Can Rotate 360 Degrees: The swivel head can rotate 360 degrees, necessary tool for spark plug change and the only way to remove spark plugs on some car models. Ideal Tools: 3/8 inch long rotating socket, 16mm and 14mm magnetic head with 12-point design, 1.2mm thickness. The spark plug wrench is compatible with multiple vehicles and is an essential tool for any car owner. Package Content: 1 x 14mm Thin Wall Universal Joint Spark Plug Connector + 1 x 16mm Thin Wall Universal Joint Spark Plug Connector. 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.