The included bolts are 3/8"-16

If you have an old British motorcycle

pre-bent with all necessary fittings for an easy installation

and fitment for a wide range of consumer products

they are easy to weld and are a great bung for blind threaded items like fender mounts or struts or anything else you can think of

39mm Solid Handlebar Riser Bushings for Harley-Davidson - Aluminum Subcategory_Motorcycle Gas Tanks The included bolts are 3/8"-16Tired of that vague, mushy response from your stock rubber handlebar bushings? Upgrading to a solid mount is one of the best ways to get a crisp, connected feel to your front end, especially if you're running taller T bars or ape hangers. These bushings not only provide a dramatic improvement in stability but also create a significantly cleaner, custom look under your top triple tree. Proudly made in Ohio, USA. See Additional Information below for