Precision die-cast aluminum construction with stainless-steel ball joint mounting hardware. Tempered glass mirror 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. Dimensions approx.: 2" (51mm) x 3.6" (91mm) rectangular head.