Premium Marine-Grade Construction：These stainless steel cup holders for boats are crafted with 304 marine-grade alloy, offering exceptional corrosion resistance for saltwater environments. The rust-proof boat cup holder design ensures longevity in marine/RV/camper use.
Complete 4-Piece Set：Package includes 4 heavy-duty cup holder inserts with integrated drainage system. Each unit features hose barb fittings, mounting gaskets and anti-slip pads - perfect for securing drinks on rocking vessels.
Universal Installation：With 4.2" lip diameter and 3.6" main cavity, these marine cup holders for boats adapt to most beverage containers. Pre-drilled holes allow quick installation on fiberglass, teak or aluminum surfaces without permanent modification.
Smart Drainage Design：Patented spillway channels and 2.8" secondary basin prevent liquid pooling. The cup holder's angled drain port connects to standard marine hose systems, keeping decks dry in rough waters.
Multi-Surface Application：Beyond marine use, these versatile cup holders securely mount to RV countertops, camper tabletops, or vehicle dashboards. Non-slip silicone base protects finished surfaces while holding drinks steady.
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