This specialty socket has been designed to open and close most radiator drain plugs that have thumb wings. Radiator plugs, in many cases, are located in confined areas enclosed by cowling sheet metal making access for turning difficult. In operation, this unique socket snaps on a 3/8" square drive extension allowing it to reach into confined areas. The socket has a double slotted end that captures the thumb wings in order to turn the drain plug open or closed. For use on most import and domestic cars, this tool is made from quality alloy steel and comes in a Schley high tech black finish. Includes ‘85 & later Honda Automatic Trans Dipstick and Filler Cap “For Use On Most Import Automobiles”