This 12-piece Socket Wrench Set includes nine 1/2-Inch drive socket wrenches. Includes 7/16-Inch, 1/2-Inch, 9/16-Inch, 5/8-Inch, 11/16-Inch, 3/4-Inch, 13/16-Inch, 7/8-Inch and 15/16-Inch 12-point sockets plus a 5/8-Inch spark plug socket, one ratchet and a 5-Inch extension. Keep all of pieces together in a compact hinged metal box.