General description This rubber freeze plug protects your pool pipes during the winter months by preventing water from entering the pipes and damaging them by freezing. It extends the life of pool pipes and reduces de-icing problems. The multipurpose design allows it to be used as pipes, oil seals, return pipes, and detergent pipes. Additionally, it can be utilized for pressure testing of pool pipes or other leak detection methods, or to prevent water from escaping during equipment maintenance. Technical specifications Diameter: 51 mm Material: High-quality rubber and metal Corrosion-resistant and rust-proof Installation Easy to install in seconds without any tools Simply screw the plugs into all the return and drain ports after blowing out the pipes Usage Prevents water from entering pipes during winter Reduces de-icing problems Can be used for pressure testing and leak detection