Protecting your pool's plumbing with our threaded return line antifreeze plug. This winterizing pool plug is essential for preventing freeze damage to your pool's return line. To install, simply screw the plug into the return line until it is tightly secured. This stopper will block water from entering the pipes, ensuring your pool remains in top condition throughout the winter months. Features -Color:Black -Material:Plastic -Size:5.20X5.20X3.00cm/2.04X2.04X1.18in -Thread size:Approx. 4.8cm/1.9in -Inner diameter:3.81cm/1.5in -Quick installation: the pool antifreeze plug is designed for quick and easy installation, allowing users to place and remove it with minimal effort -Threaded design: the threaded ensures a secure and easy installation, making it a convenient choice for pool maintenance -Multiple uses: this plug can be used for antifreeze, drainage, and sealing, providing a multifunctional solution for -Protects against freezing: effectively protects pool pipes from freezing and cracking during cold weather, ensuring the integrity of your pool system -Prevents structural damage: by preventing water from freezing, the plug helps protect the pool structure and equipment from potential damage Package list: 3 x Pool Drain Plug