Specification: -Material: Plastic -Cup Holder Diameter: 2.75"-3.15"/ 7cm~8cm -The cup holder diameter is 7cm~8cm -Adjustable Clamp Diameter: 0.6"-1.6"/1.5cm-4cm -Color: Black -Weight:106g/pcs -Cup Holder Fitment: water bottles, coffee cups, beer, cans, glas and so on. -Suitable: Yacht, Pontoon boat, bass boat, Jon boat, Dighy, Kayak, Jet Ski, Waver Runner, Seadoo and so on. Removable Design: The cup holder part is removable from the clamp. Anti-slip Design: Package come with 2 anti-slip rubber that makes the cup holder rock solid even over any bumps once it mount on the tube Installation: No tool require to install, with the clamping system, you are able to mount it to any pipe easily and quickly, such as boat rail, boat handle bar, kayak stern lights and so on. Easy to attach almost anywhere you need it! Perfect Gift: Our boat cup holder with nicely package, and design for boater to enjoy boating. If your friend or family own a boat, this will be a great idea as a gift for them. Package Include: 2 x Marine Boat Cup Holder

?No More Spilling Drinks?It holds the drink nice snug and the drink slides in and out easily, which frees your hand and no more spilling from the coffee or beer can when boating or fishing, your life will enhance greatly with these cup holder. A must for boating or who like fishing on boat. ?Fit Most Of Container?The part that holds the drink is flexible enough to expand to fit any size of container like cups, water bottles, coffee cups, beer, cans, glas and so on. ?Super Easy And No Drilling To Install?Professional boat drink holder, no drilling needed, no tool needed and no damage to boat, simply mount on boat aluminum rail, pole or bimini top rail like the image . Besides, package comes with Non-slip Mat to keep the boat cup holder from sliding. ?Strong And Easy To Use? Made of very strong and flexible PP plastic meterial, once mount to the boat rail, the adjustable knob willl make the cup holder rock solid on the rail, secure the cup or bottle in place safely and prevent the beverage from spilling or falling. Hold the beer can in place even over any bumps. ?Prefessional Boat Cup Holder?360 rotated design supports it to fit on most boat rail, bimini top rail, pole or handle bar. Whether it is horizontal, vertical, or inclined handrails, these boat cup holder will hold on tight and keep the drink stays in place. Therefore, you can clamp these on wherever you want, and work perfect on pontoon boat, bass boat, Jon boat, Yacht, Dinghy, Kayak, Jetski, Seadoo, Waverunner and so on.