Boat cup holder made of ABS plastic. The cup holder features anti-slip rubber grips for a secure hold and strong grip. Mounts easily to rails with an adjustable knob that keeps the cup holder firmly in place, ensuring drinks stay secure and do not spill. Easy to installsimply clamp on without tools, drilling, or assembly, causing no damage to your boat. Compatible with aluminum rails, poles, and bimini top rails. This durable and practical boat drink holder accommodates various bottle and cup sizes. The adjustable clamp allows rotation and can be mounted on horizontal, vertical, or slanted poles at different angles. Anti-slip rubber lining helps keep bottles stable and prevents spills. Suitable for pontoon boats, bass boats, jon boats, jet skis, yachts, kayaks, and more. Holds water bottles, coffee cups, soda cans, and other beverage containers. Universal design includes a storage space for small items such as sunscreen, pliers, lures, wipes, and other accessories. Color: Black Material: ABS Package Contents: 1 x Cup Holder Note: Light reflection and display differences may cause slight color variations. Measurement allowance is +/- 1-3 cm.