Step-by-step instructions for use: 
1, choose the appropriate specifications of the socket assembled in the main body with a handle on the side of the square head will rocker assembled in the main body on the other side of the square head 
2, the assembled wrench socket into the need to dismantle or tightening of the tire nut on the 3, rocking the rocker to the nut to shake loose, the main body to replace the extension for the dismantling of the body after the 4, the tightening of the nut in the reverse order, the first with the extension to rotate into the nut, and then replace the extension with a Main body tighten the nut