Keep your pool's plumbing safe during the winter with our threaded return line antifreeze plug. This pool stopper accessory is designed to provide a secure seal, preventing water from entering the return line and freezing. To install, simply screw the plug into the return line until it is tightly in place. This will help maintain the integrity of your pool's plumbing system, ensuring a smooth and good winter season. 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 -Easy to install: the pool antifreeze plug is designed for easy installation and removal, allowing users to place and remove it with ease -Threaded plug: the threaded return pipe ensures a and easy installation, making it a practical choice for pool maintenance -Multifunctional use: this plug is suitable for antifreeze, drainage, and sealing, offering a versatile solution for -Protects from freezing: effectively protects pool pipes from freezing and cracking during cold weather, ensuring the longevity 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: 4 x Pool Drain Plug