Boat cup holder made of ABS plastic. The cup holder clip features anti-slip rubber for a strong grip, designed to mount securely on boat rails. A 360-degree adjustable knob ensures the cup holder remains stable and secure on the rail, allowing you to place drinks inside without worry of spills. The cup holders are easy to install—simply clamp and go, with no tools, assembly, or drilling required, preventing any damage to the boat. Compatible with aluminum rails, poles, and bimini top rails. This boat drink holder is simple, durable, and practical. The large-caliber design accommodates various bottle sizes. The adjustable clamp allows 360-degree rotation and works well with horizontal, slanted, or vertical poles, enabling installation at different angles. Anti-slip rubber lining keeps bottles secure and prevents drinks from spilling or falling. Suitable for pontoon boats, bass boats, jon boats, jet skis, yachts, kayaks, and more. Holds water bottles, coffee cups, beer cans, and other beverage containers. Easily mounts to boat rails and can be repositioned as needed. The universal design offers ample interior space for storing small items such as sunscreen, pliers, drinks, wipes, lures, and other accessories. Color: Black Material: ABS Package Contents: 2 x cup holder / 1 x cup holder Note: Light reflection and display differences may cause slight variations in color between the image and the actual item. Measurement allowance is +/- 1-3 cm.