CIPA's Comp II Marine Mirror features a four by 11 inch OE grade shatterproof convex safety glass mirror surface to provide added safety and situational awareness. In order for glass to be considered of OE grade it must utilize a technique called first surface coating. First surface coating provides a high quality image that eliminates symptoms such as ghosting and multiple reflections. The convex design of the glass provides for a wider viewing angle. The Comp II Marine Mirror is universal in application and fit, and can be mounted above or below the windshield. Ball and socket tension adjustment knob design keeps the mirror where it's positioned. The aluminum anti-scratch quick-mount bracket accommodates round or square windshield frames from 1/2 to 7/8 of an inch. This mirror is made with non-corrosive materials and salt spray tested. It's easy to install, and includes all hardware.