[rustysrustyduc]

OK great! That seems odd they machined a 12pt hole, but expect you to use a 6 sided tool. Of course we all use 12 pt sockets on 6 sided nuts/bolts all the time, but still! ��

I found an M15 triple square on eBay. The only one!

I'll give all of these a try, as I have ten to remove, and ten to put back on!

Thanks!