Our Adapter Studs have been designed as a universal kit to ease installation of our "hidden wire" Silver Bullet® or Mini Bullet lights in custom applications. The studs are hollow and threaded 3/8"-16 on one end and 5/16"-24 on the other. They allow you to mount any of our Silver Bullets® or Mini Bullet lights with 3/8" threaded mounting holes in a 5/16" hole. These will come in handy in just about all fender strut applications. The 5/16" diameter end is extra long and should be cut to length to ensure adequate clearance.