dd a Sola light to the arm of your underwater camera/housing system with this Sola Photo Ball Mount Kit from Light & Motion. The ball has a groove and an O-ring to prevent slipping, for a better hold with less force. Along with the actual mount, this kit includes a screw and an Allen wrench. It’s compatible with any standard arm system that has 1.0″ ball joints and clamps, such as those from Ultralight, Ikelite, Aquatica TLC, Sea & Sea, and others.