CIPA's Concept II Marine Mirror features a 4 x 8 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 Concept II Marine Mirror is universal in application and fit, and mounted above or below the windshield. Pivot Cup-Mount bracket provides over 120 degrees of easy adjustment. Clam shell clamp design fits most windshield trims and sizes. No drilling inquired for installation.