CIPA 02022 Extreme 7" x 20" Marine Mirror First ever multi-lens marine mirror designed exclusively for ski boats easily exceeding the 78 square inch law of Alabama Features a 12 x 6 inch shatterproof convex center lens, and two adjustable 4 x 6 inch shatterproof flat lenses on each end. The overall size of the mirror measures 7 x 20 inches providing an excellent wide angle view of the rear and sides of the boat Features a ball and socket adjustment knob that will keep the mirror where you position it Universal anti-scratch aluminum bracket mounts to rectangular or round windshield frames from 0.375 to 1.25 inches. Uses a quick and easy clamp-on design and can be positioned to sit above or below the windshield frame High quality mirror constructed of heavy-duty durability tested materials and OE grade glass