Ensure your pool is ready for winter with our threaded return line antifreeze plug. This pool drain plug is designed to provide a tight seal, preventing water from entering the return line and freezing. To use, screw the plug into the return line until it is secure. This will help maintain the integrity of your pool's plumbing system, allowing you to enjoy a 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 -Simple installation process: the pool antifreeze plug features a simple installation process, making it easy for users to place and remove it without hassle -Reliable threaded design: the threaded stopper designed ensures a reliable and , simplifying the installation and removal process -Versatile functionality: suitable for various purposes such as antifreeze, drainage, and sealing, this plug is a versatile addition to your pool maintenance toolkit -Winter protection: provides effective protection against pipe freezing during winter, ensuring the longevity of your pool's plumbing system -Prevents equipment damage: by preventing water from freezing, the antifreeze plug helps prevent damage to the pool's structure and equipment Package list: 1 Drain Plug