[cdnus]

After damaging many Vintage pin drive nuts on installation no matter how carefull I was, I decided there had to be a better way.
My solution was to machine a steel sleeve (blind hole )to slip snuggly over the nut the full length & on the external end (solid) bore a hole just large enough to allow the hex wrench to slip through & into the nut.
It is imprtant to keep the wall thickness as heavy as possible & the guide hole reasonably long for the best support.
With this little tool I have been able to install & remove my adapters with never seize & 80ft. lbs. many times with out any damage & my wheels slip on & off easily.
Simply, what it does is support the O/D of the nut while helping to keep the hex wrench in line, therefore not allowing the wrench to strip the hex & damage the O/D of the nut.
Works for me, hope this helps,

Craig