Pool Stoppers: You can 3 black rubber expansion stoppers, 3 sizes, 1 inch (about 2.5 cm), 1.5 inches (about 3.8 cm), and 2 inches (about 5.1 cm) for daily use and replacement needs, to help you protect your pool in the cold winter. Wide Applications: This pool stopper can be used as a pipe stopper to prevent backflow and prevent it from entering the pipes in winter; This extension cord also has other uses, such as testing pool pressure and preventing pool flow during equipment maintenance. Stable performance: The winter pool stopper is made of rubber, which is stable and durable; In addition, this pool thread return plug is also cold resistant and does not shrink; can be used for a long time. Practical: these expandable rubber plugs protect the plumbing system of the swimming pool by preventing access to the pipe; Simply screw the plug into the return water; Threaded plugs pool return pipe prevent pipes from bursting. Provide Convenience: These pool skimmers plugs can be used as hydraulic plugs, and the threaded hydraulic pool plugs are suitable for winter grounds and swimming pools; They can be used in outdoor pools, kitchen and small indoor pools. Color: BlackMaterial: RubberPackage Contents: 3 x Pool PlugsOnly the above package content, other products are not included. Note: The light and different displays may cause the color of the item in the picture slightly different from