This oil drain plug wrench with 17 mm box end and 14 mm hex driver makes it easy to work on drain plugs on most BMW and Mercedes vehicles using 17 mm oil drain plug and 14 mm transfer case/differential drain plugs. 17 mm box end services the oil drain plug. 14 mm hex driver end services the transfer case and differential drain plugs. Low profile design with offset lets you work on drain plugs where sockets can't reach. Compatible with most BMW and Mercedes-Benz vehicles. This Capri Tools Oil Drain Plug Wrench with 17 mm box end and 14 mm hex driver makes it easy to work on drain plugs on most BMW and Mercedes-Benz vehicles using 17 mm oil drain plug and 14 mm transfer case/differential drain plugs. The 17 mm box end services the oil drain plug and the 14 mm hex driver services the transfer case and differential drain plugs. It has a low profile design with an offset so you can work on drain plugs where sockets can't reach. Compatible with most BMW and Mercedes-Benz vehicles.