2pcs Swimming Pool Winterization Plugs, 38mm/1.5inch Rubber Expansion Gel Plugs for Swimming Pool Spa Pipeline and Winter Fittings Maintenance

General description You will receive 2 swimming pool winterization plugs designed to prevent water from entering the pipes during winter maintenance. These plugs are essential for protecting your swimming pool and spa pipeline from freezing damage. Technical specifications Size: 38mm (1.5 inches) Material: High-quality rubber Usage Blocks the pipe after draining the pool to prevent water from entering and freezing. Used as a rubber plug for oil skimmers, return water, and cleaning lines during winter. Can be utilized to test the pressure of the pool pipe or stop water flow during equipment maintenance.