Features an adjustable mounting ball tension so that it can be tightened up for demanding off-road environment Only convex in the horizontal direction so that objects appear exactly where they are in relation to your vehicle Can be post mounted horizontally or vertically with its 3/8"-16 thread post Easily removable clamp adapter allows mounting with any size clamp Include Axia Alloys' patented modular roll-cage mounting system Fits around any cage tubing in 1.5", 1.75", 1.85" and 2.0" OD Low distortion crystal-clean view Shatter-resistant glass insert Offers infinite adjustability Requires OD size specific strap clamp (sold separately).. MIRROR PANORAMIC RR 9"