Mandated by most race organizations, the Vortex V3 Lever Guard is adjustable to three positions The guard includes three M5 X 12 FHCS, though only two are required for installation Use a thread locking agent on screws and check for tightness after each ride Installation should be performed by a Certified Mechanic The V3 Lever Guard is meant for race use only Bar end must have an .875 inch diameter to work with this part.. BRAKE LEVER GUARD