what is socket wrench

    Socket wrenches commonly call socket: it is composed of multiple holes with a hexagonal hole in the sleeve or the twelve holes and with a handle, extension bar and other annexes, especially for switch position which is very small screw or a deep depression Office of the bolts or nuts. Sleeve with metric and imperial of the points, although the concave shape of the same sleeve, but the diameter, length and so is the corresponding equipment for the design of the shape and size. Usually accompanied by a set of socket wrenches variety of socket head and swing the handle, extension bar, universal joint, screwdrivers and joints, elbows, etc. to handle set into the hexagonal nut. The socket head wrench is a hexagonal cylinder concave; wrench is usually carbon steel or alloy steel, wrench head with the provisions of the hardness, the middle part and the handle is flexible.