Upgraded Inner Adjuster Plug
This upgraded Inner Adjuster Plug features a 10x1mm metric drain plug with a 5mm hex that is larger and deeper for increased engagement, and comes with the proper 10x14mm copper washer. Never worry about a stripped adjuster again!
"Bonus" you won't have to chisel them off in the future like the video below!
Priced each. You will need two for your car.