CIPA 01609 Black Vision 180 Degree Marine Mirror with Deluxe Cast Aluminum Cup Mounting Bracket Mirror provides full 180 Degree range of Port to Starboard Rearview Vision Pivot Cup Mount Bracket Provides 120 Degree of Adjustment for foldable storage Clam shell design accommodates most windshield trim sizes and shapes Durable with lightweight construction for years of care-free use No drilling required for easy installation