This mechanic tool kit has both metric and standard sized sockets. Whether youre repairing a washing machine automobile or assembling prefabricated furniture, youll have the right size socket to work with. This set has two different handles a traditional ratcheting handle and an insulated nut driver handle. The ratcheting handle can be used to loosen bolts while the nut driver is great for working in small areas for precision work. It comes in a compact hard-plastic case so youll be able to keep this set in your vehicle, camper, or office. The case also features a carrying handle for quick access to your kit.