SeaLux UV stablized Recessed White Plastic Drink Cup Holder Replace Insert for Marine Boat Car Van with 3/8" Drain recessed drink holder with one 3/8" self-drain hole inside. Fit for cup or larger size mug. Standard size for boat replacement insert. Install almost anywhere. Dual purpose design allows use of beverage cans with or without insulated can wraps Cutout Hole Required: 3-3/4";Color: Black; net Wt.: 1.6 oz. For boats, cars and RVs Molded plastic Made of Molded inject plastic Dual purpose design allows use of beverage cans with or without insulated can wrap.