CIPA's COMP Universal Marine Mirror was designed with competition water skiing in mind. With a 7 x 14 inch convex mirror face, the captain is sure to see the skier no matter where they are on the water. The COMP Universal Marine Mirror features a ball and socket tension adjustment knob to keep the mirror where it's positioned. The universal bracket will mount to rectangular or rounded windshield frames from 0.375 to 1.25 inches thick. When it comes to water sports, being safe is just as important as having fun.