Overview: Biltwell Utility Mirrors boast clockworks precision and timeless retro style to stand out or blend in on any stock or custom motorcycle you can imagine. Precision die-cast aluminum construction with stainless-steel ball joint mounting hardware. Tempered glass mirrors available in 2.5” x 4” rectangular shape. Threaded mirror stalk base accepts 5/16-18 stainless steel button cap Allen bolt for easy mounting on a wide range of stock Harley and select aftermarket hand controls. The pair version comes set up for left and right side mounting.