Fits most oil drain, transfer case and differential plugs Swivel head allows for easy access and fits all angles Heavy-Duty yoke support to withstand high torque applications Superior indexing feature locks socket into working position Features built-in magnet to hold drain plug or nuts Chrome molybdenum steel for strength and durability SAE Sizes: 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4 and 13/16