The Lumax 8-in-1 SAE & Metric oil drain plug swivel wrench set is a Lumax proprietary and patented design. It features eight socket sizes all in one tool. The LX-1865 & LX-1866 fits most oil drain, transfer case and differential plugs. The swivel head allows for easy access and fits all angles. The oil drain plug swivel wrench is made from chrome molybdenum steel and the yoke support withstands high torque applications. The wrench features a built-in magnet to hold drain plugs or nuts. The indexing feature locks the socket into working position. The eight SAE sizes are 3/8”, 7/16”, 1/2”, 9/16”, 5/8”, 11/16”, 3/4” and 13/16” (No. LX-1865). The eight metric sizes are 8mm, 10mm, 12mm, 13mm, 14mm, 17mm, 19mm and 21mm (No. LX-1866).