Threaded Pool Return Pipe Plug Replacement Bathroom Sink Plugs Expandable Drain Pipe Stopper Corrosion Resistant Accessories Rubber Inflatable Pool Winterizing Stopper Replacement Pipe Sealed Plug Corrosion Resistant Bathroom Sink Plugs Pool Accessories Feature: 1. Material: The swimming pool plug in winter is made of rubber, which is stable and tough; it has the greatest expansion, which can ensure tight sealing and corrosion resistance. 2. Expandable Pool Plugs: These expandable rubber plugs protect your pool plumbing by preventing pipe entry; you simply screw the stopper into the return water; threaded pool return pipe plugs help prevent pipe breakage. 3. 4 Sizes: 1 inch (about 2.5 cm), 1.5 inches (about 3.8 cm) and 2 inches (about 5.1 cm), 2.5 inches (about 6.3 cm) for your daily use and replacement needs, to help you in Protect your pool from cold winters. 4. Pipe Plug: This pool plug can be used as a pipe plug to prevent backflow in winter and prevent it from entering the pipeline; this extension plug also has other uses, such as testing pool pressure and preventing pool flow during equipment maintenance. 5. Application: Bring convenience to your daily life: You can use them in outdoor swimming pools, kitchen and bathroom sinks, and small indoor swimming pools. Specification: Model Number: Pool Stopper Name: Winter antifreeze swimming pool plug Material: Rubber + stainless steel Style: 25mm, 38mm, 51mm, 63mm Diameter: About 25mm/1in, 38mm/1.5in, 51mm/2in, 63mm/2.5in Weight: 50g 60g 100g 130g Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. 1 x Rubber Plug