The T-H Marine Boat Twist Drain Plug is a must-have for reliable, watertight sealing in your boat's drain system. Built for ease of use, it features a twist-to-lock design that fits standard 1" drain holes, offering hassle-free performance season after season. Twist-to-lock design for secure sealing Fits standard 1" drain openings Tool-free installation and removal Durable materials resist corrosion Works with most boats and watercraft Ideal for routine drainage and maintenance Compact and easy to store onboard Provides watertight protection in rough conditions