Used with specialized socket wrenches to unscrew fuel lines, temperature sensors, thermal switches, lambda probes and other elements with cables Range: 10, 11, 12, 13, 14, 17, 19 mm Drive: 3/8 "(10 mm) and 1/2" (12.5 mm) Sockets made of durable chrome vanadium steel Placed on a metal bar Type of cap: open