cleaning block tips (HG repair)

[Zulfiqar]

I have a proxxon (Germany) toolkit and the 21 mm spark plug socket it has - has got a neat hexagon milled onto the back end of it, It fits perfectly onto the plastic plug, - and I also use it to unscrew the front suspension unit bolts - as its hollow and an allen wrench passes through it. Seems as if proxxon made to service VW Golfs