SeaLux UV stablized Recessed BLACK Plastic Drink Cup Holder replace insert for Marine Boat Car Van with 3/8" drain SeaLux Marine 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. For boats, cars and RVs Molded plastic Made of Molded inject plastic. Marine Grade product, outdoor use friendly. Cutout Hole Required: 3-3/4";Color: Black; net Wt.: 1.6 oz.