https://www.lowbrowcustoms.com/em-cgi/btag/collections/motorcycle-springers/products/springer-riser-studs-1-2-13-x-1-2-20-thread
Lowbrow Customs Springer Riser Studs 1/2-13 x 1/2 inch-20 thread for Harley, Mid-USA, DNA, Paugcho...
'- Allows handlebar risers to be mounted on Harley, Mid-USA, DNA, Paughco and most aftermarket springers- Half 1/2"-20 fine thread, half 1/2"-13 coarse thread-...