Need Help From a Porsche Tech!!

[2.2 Straight six]

I have a 2008 Cayenne on one of the ramps where i work, and we're (supposed to be) doing the front and rear brakes. however, this one has high performance calipers, which use bolts to hold the pads in place, as opposed to the pins usually used on these cars. the problem lies in that these bolts are a male 10-point head. something like aerospace spline bolts, but 10 points instead of 12. i've had no luck sourcing a tool. apparently one of the techs at a local dealership got one through Snap-on, but i can't find anything.

any help would be greatly appreciated!
Many Thanks,
Moose.