Simply snap one of these unique drink holders onto the horizontal tubing on your boat and put an end to spills on the deck. Interior Dimension 3.6”(2.59” at narrowest point)X 7.35”. Overall Height 8.95”. Order to fit specific tubing size. Designed to be easily moved to different locations on the boat and stored below to avoid theft. (Needs 8" of space between the deck and tube).