Constructed with forged billet aluminum. Hidden triangulated spring plate is mounted behind the convex glass that will not vibrate or loosen. A stainless steel pivot is pressed into each mirror stem. Glass dimensions measure 4-1/2″ W x 2-1/2″ H. When ordering hanger stem for under-mount applications, order the opposite right- or left-side fitment.. Each mirror includes hardware for Harley-Davidson, Victory, Indian and Metric.