Keep your inflatable boat dry and safe! The Alpuna Nautic drain valve with slider is an essential accessory for any serious boater. This self-draining valve consists of an inner part with convenient slider and an outer part on the water side, complete with two reliable rubber O-rings for a perfect seal. The smart rubber membrane effectively prevents water from entering from the outside, while the practical slider securely closes the valve when not in use. Designed for panel thicknesses of 25mm, it requires a hole diameter of 40mm in the transom. The package includes everything you need: 1 inner module with slider, 2 rubber rings, 1 outer part including retaining rubber. Easy to install and built to last, this high-quality drain valve ensures your boat stays dry and ready for your next adventure. Whether you're dealing with splashing waves or rainy weather, this valve has got you covered. Made by Alpuna - a trusted name in marine accessories. Perfect for inflatable boats, dinghies, and other small watercraft where reliable drainage is crucial. Stay safe and dry on the water with this professional-grade boating essential!