General description You will receive 2 swimming pool antifreeze plugs designed for winter maintenance. These plugs are essential for preventing water from entering pipes and freezing during the winter months. Technical specifications Size: approximately 38mm/1.5in Material: high-quality rubber Usage Blocks the oil skimmer, return water, and cleaning pipes to prevent water from entering during winter Can be used to test the pressure of the pool pipeline Stops water flow into the pool during equipment maintenance