i have to find this plug that needs removed and Make Sure there is enough clearance for the 1/2" extension to get at it safely
it appears buried at a first glance...
Size: 8 mm (Metric) Long Hex chrome bit socket. Has a permanent stamped size marking clearly visible with an extra-deep outline. S2 steel bit. SHB13408.
Most sockets as such don't work well, or at all, at least from my experience. I'll weld a good nut on a buggered up bolt head, and use heat if necessary to break it free.