4 PCS Boat Cup Holder Insert, Plastic Cup Holder for Boat, Marine Drink Holder Replacement with Drain for Marine Boats, Deck, Car, RV, Camper (White)

Marine-Grade Durable MaterialThe boat cup holder made of marine-grade materials that are corrosion-resistant and deformation-resistant. It resists aging from dampness and sun exposure. Marine cup holder has 5 years corrosion-free performance, far outlasting ordinary cup holders
Large Drain Rapid DrainageCup holder insert with large drain hole, quickly drain seawater, condensation, no more water stains. The cup holders for boat can stay stable on rocking boats and bumpy rides, preventing cup slips and tips
Perfect ReplacementPlastic cup holder designed with 3.4 H x 3.5 ID x 4.3 OD dimensions. its 3.5" inner diameter fits most cups on the market. It perfect an ideal direct replacement for old boat cup holders on boats and RV
Insert Stable SupportThe boat cup holder inserts can tightly fits the mounting surface to avoid loosening and spills. Rock-solid during boat navigation or truck off-road
Wide ApplicationThe perfect replacement for plastic drink cup holder is suitable for most boats, cars, trucks, RV, deck, sofa and more. Boat cup holders for drinks is compatible with a variety of glass and can containers, making it highly practical