These time saving sissybar and strut mounting kits are the tried and true kit we have been using for years. The outer spud accepts the provided Allen head socket cap screw and is welded to your strut or sissybar. The step spud is threaded and fits into a 1/2" hole that is drilled in your fender. Available in 5/16-18 or 3/8-16. Sold in pairs. Grade 8 Allen head socket cap screws provided.