Boat owners, this Seachoice drink holder is exactly what your vessel needs to keep drinks secure and accessible! The clamp-on double cup holder design is genius - it fits popular round tubing from 1.5 to 2 inches AND square tubing from 1.25 to 1.5 inches. That means it works perfectly with hand rails, T-tops, tower supports, and most other boat railings. The construction is seriously durable - made from UV-protected, marine-grade polyethylene and calcium carbonate that can handle years of exposure to sun, saltwater, and the general harshness of marine environments. The weatherproof design means no rust, no corrosion, and no deterioration even after seasons of use. Installation is super straightforward - no complicated tools or drilling required in most cases. The double holder means you can secure two drinks at once, which is perfect when you have guests onboard. The white color looks clean and nautical against your boat's existing fixtures. What's really impressive is the quality - this isn't some flimsy plastic holder that'll break after one season. Seachoice is known for making affordable but reliable marine accessories, and this drink holder definitely lives up to that reputation. Whether you're fishing, cruising, or just enjoying a day on the water, having secure drink holders makes everything more enjoyable and safer. Your boat is about to become so much more functional and comfortable!