OEM style allen head. This 11/16″-16 plug is used to repair 5/8″-13 stripped threads in crankcase timing holes and some drain holes. Used to replaces stripped OEM 720 timing plugs, and some identical threaded oil tank drain plugs. Note: A 11/16-16 tap is not included. See Colony 512915 plug & tap kit, which includes the tap but has a custom Acorn styled head.
