fits stock cotton spool hubs which were from 1954 - 1970

Installation: Secures with a set screw

Bar clamps feature 5/16-18 t

eliminates valve sticking

These are nice when used in conjunction with our threaded 3/8"-16 bungs as they are the same diameter and make for a seamless mount

Springer Riser Studs 1/2-13 x 1/2 inch-20 thread for Harley, Mid-USA, DNA, Paugcho Springers Lever Type_Lever Sets fits stock cotton spool hubsAllows 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 Made in the USA These 1 3 4 inch long springer riser studs have 1 2" 20 fine thread on half the length (7 8 inch) to thread into your springer, and 1 2" 13 coarse thread on the remainder (7 8 inch) to thread into your risers. These allow you to mount risers on many different motorcycle springers,