Marine-grade thru-hull drain fitting made from durable nylon for reliable, long-term use on boats and yachts. Key benefits Corrosion- and UV-resistant construction: Marine grade nylon resists saltwater, sun exposure, and general wear so the fitting stays serviceable in harsh marine environments. Tool-free installation and removal: Snap-in design lets you install or disassemble the fitting without tools, speeding routine maintenance, repairs, or winter storage. Prevents water buildup: The integrated water-blocking feature controls flow and reduces the risk of standing water on decks and in compartments, improving safety and comfort. Compact and easy to store: Each package contains one compact plumbing fitting that takes minimal storage space and is simple to carry as a spare. What it does Acts as a thru-hull drain/scupper to route unwanted water out of cockpit, deck wells, or small compartments. Controls drainage to keep water from pooling while allowing efficient outflow when needed. Compatibility and performance Material: Marine grade nylon for strength, chemical resistance, and reduced corrosion compared with metal alternatives. Designed for use on boats and yachts; suitable for a wide range of marine drain and scupper applications. Reliable performance in saltwater and freshwater environments; requires no specialized tools for servicing. Package contents One compact thru-hull drain fitting (one per package), ready to install and easy to store. Practical use scenarios Cockpit scupper: Install in a cockpit drain to keep rainwater and spray from accumulating and to speed deck drainage. Livewell or bait tank overflow: Use as an outlet fitting to control water levels and prevent standing water that can affect bait health. Small compartment or locker drain: Fit into lockers or storage compartments to manage condensation or minor leaks without intrusive hardware. Installation and maintenance tips Clean the mounting area and check hose connections before inserting the fitting. No tools required for normal installation or removal; inspect periodically for debris that could restrict flow. Keep one unit in your spares kit for fast replacement during trips or seasonal maintenance.