Boat cup holder made of ABS plastic. The cup holder clip with anti-slip rubbers provides a strong grip. Mounts to the boat rail, and the adjustable knob ensures the cup holder remains secure on the rail. You can place drinks in these cup holders without worrying about spills. The cup holders are easy to install, requiring no tools or assembly, and cause no damage to the boat. They can be mounted on aluminum rails, poles, or bimini top rails. This boat drink holder is simple, durable, and practical. The adjustable clamp allows rotation and fits horizontal, slanted, or vertical poles, making it suitable for various installation angles. The anti-slip rubbers keep items secure and help prevent drinks from spilling or falling. Suitable for Pontoon Boat, Bass Boat, Jon Boat, Jet Boat, Kayak, and more. Boat rail cup holder can hold water bottles, coffee cups, beer cans, glasses, and more. Mounts on rails and can be moved to any rail on the boat. Universal drink holders feature additional space inside to store small items such as suntan lotion, fish pliers, hand wipes, lures, and more. Color: Black Material: ABS Package Contents: 2 x Cup holder Only the above package content is included. Other products are not included. Note: Light reflection and different displays may cause slight color differences. Measurement may vary by +/- 1-3cm.