Socket Wrench is a tool that has the same function as the Open End Wrench and the Box End Wrench, namely to loosen and tighten bolts/nuts. With the shape of the socket head that covers the entire head of the bolt / nut so that the grip on the socket is much stronger than the Open End Wrench and the Box End Wrench. And the energy used is also not as big as when using the Open End Wrench and the Box End Wrench. There are various types of YAMAMOTO Socket Wrench that you can choose according to your needs. Made with special materials that have been tested, and the design of the shape has been adjusted, to be safe and comfortable when used.