This studs fits all SSI, DMPE, Fowler or Kobelco superchargers. The hard anodizing helps prevent galling and the alum. provides light weight while providing a safety factor in the event of a supercharger backfire saving your supercharger or manifold.
Threads are a 7/16-20 on the nut side of the stud and on the manifold side a 7/16-14. The unique feature of these studs are that they have an internal broached hex that make installation a snap with an allen wrench.
These studs are sold individual but if wanting a kit with nuts order #900-0007.