Seadog Flush Mount Drink Holders are constructed of injection molded ABS plastic and are available in a range of sizes. Small and medium models will hold a standard can while the large models will hold a can with a insulated can wrap. The jumbo combination models feature a dual purpose design to hold cans with or without insulated can wraps. Size: 3-5/8"/2-7/8"Dia x 3-1/4"D