General description 2-in-1 drain plug wrench specifically designed for use on BMW and Mercedes-Benz vehicles. It features a cranked 14mm hex key at one end for transmission and differential housing drain plugs, and a single hex 17mm ring spanner at the other end for engine oil sump plugs. This tool is ideal for servicing driveline fluids, speeding up service checks and oil changes. Technical specifications Length: 243mm 14mm hex key for transmission/differential housing 17mm ring spanner for oil drain plug Manufactured from chrome molybdenum with a satin finish 14mm hex key made from chrome vanadium