[Dragsinger]

Ken, all strange rotors are for the 5/8" studs. Strange has a sleeve to adapt to 1/2" if needed.

On the Strange web site note all the brake photos show with studs and nuts. If you scan the site for stud options you will set the 1/2" stud kits with "sleeves"

I have a Strange brake kit for the Super 10 build with 5/8" studs. I installed a symmetrical end on the 12 bolt housing.