Standard FG Or other 1/5th square wheel Drives fit straight on, once the Wheel Hex is removed.
£5 a pair or £15 a pair for titanium.
Just need a screw/Bolt to hold them in place,
I Think a nice titanium Bolt should do the trick?
Not sure if its M3/M4/M5 yet?
My Tyres/Wheels are now £20 a pair GRP/MPT Tyres..