Single Pivoting Drink Holder sized for canned drinks with insulated sleeves. I.D. 3.625” Overall Height 4”. Comes with mounting hardware for 7/8, 1, 1 1/8 and 1 1/4" round tubing. Plus offers the option of bulkhead mount with enclosed screws. Designed for permanent mounting. Intended primarily for mounting to angled tubes on the boat.