Winterizing your Pools is made easy with our threaded return pipe winterizing plug. This plug is specifically designed to block water from entering the return lines, which can freeze and cause damage. To install, simply screw the plug into the return fitting until it is secure. This preventative measure helps maintain the integrity of your pool's plumbing system, ensuring a smooth reopening in the spring. Features -Color:White -Material:Plastic -Size:5.50X5.50X3.50cm/2.16X2.16X1.38in -Thread Size: Approx.4.8cm/1.9in -Inner Diameter: 3.81cm/1.5in -Durable construction: crafted from sturdy plastic, this plug provides reliable antifreeze protection. -Simple to use: easy installation process involves just inserting the plug into the pool return pipe, saving time and effort -Protects against freezing: prevents the pool return pipe from freezing in cold weather, safeguarding against damage -Versatile usage: suitable for pools, water tanks, and various piping systems, offering broad functionality -Reusable design: built to last, this plug can be used multiple times without losing its effectiveness or durability Package list: 1 x Threaded Winter Pools Plug