Selliing a brand new, never used, in sealed package BRP Threaded Bar End Insert Kit with a 5/8"-11 tap. BRP Threaded Bar Inserts ... are a more secure mounting system for aluminum handlebars using wrap-around style enduro hand guards. They are sold as a self install kit that includes two inserts, two flathead bolts to mount your handguards , one 5/8-11 tap to thread your handlebars and an instruction sheet to guide you through the install procedure. BRP inserts install with a common hex key wrench and can be transfered from one bike to another. The basic concept of tapping the handlebar to accept the threaded insert works like a charm. By limiting the depth of the tapped handle bar you can tightly bottom out the threaded insert preventing them from loosening. The throttle side insert is apprx 1/4" longer to accomodate the throttle pipe. The tap comes marked so it is simple to tap your bars to the correct depth. The threaded bar insert is the most solid mount on the market at this time and outperforms anything else. Thanks for looking.