The Strike Sideview Mirrors, Pro Fit feature adaptive 360 Bracket Rotation. That will accommodate any angle roll cage pillar & provide optimal viewing position, so you can mount it high or low and adjust to perfect position every time. With a heavy-duty steel mounting clamp The low mass design provides maximum strength and durability. Convex Mirror Surface: provides wider viewing angle and image stabilization. Strike Sideview Pro Fit Mirrors have shatter resistant safety glass, designed to handle the toughest elements.