Protect Swimming Pool Pipes: Our Swimming Pool Winter Rubber Expansion Plug are used as plugs to block the oil skimmer, return pipe or detergent pipe, to prevent the swimming pool from entering water in winter and to prevent frost damage to swimming pooldrain pipelines.Premium Material: The Rubber Expansion Winterizing Plug is made of heavy duty metal bolts and rubber, rust-resistant and corrosion-resistant, and the rubber material ensures a firmer fit and can block water.Easy to Install: The Swimming Pool Winterizing Plug is easy to install and use, you only need to press the Pool Winterizing Plug into the pipeline, and it can be up and running in a few seconds.Multifunctional Use: Pool Antifreeze Plug have other uses, such as pressure testing pool pipes or other leak detection methods, or preventing water from flowing out of the pool during equipment maintenance.What You Get: You will get 2pcs Swimming Pool Rubber Plug, each size is 5.1*5.1*4.2 cm, and unit weight is 100g, compact and easy to carry.Product Description-1. Our Swimming Pool Drain Plug are used as plugs to block the oil skimmer, return pipe or detergent pipe.-2. to prevent the swimming pool from entering water in winter and to prevent frost damage to swimming pool drain pipelines.-3. The Rubber Expansion Winterizing Plug is made of heavy duty metal bolts and rubber, rust-resistant and corrosion-resistant.-4. Winter Accessories for Swimming Pool can be used to pressure testing pool pipes or other leak detection methods, or preventing water from flowing out of the pool during equipment maintenance.SpecificationQuantity: 2PcsMaterial: Metal + RubberUnit Size: 5.1*5.1*4.2 cmTop Diameter: 51mmBottom Diameter: 42.5mmTotal Weight: 200gPackage Size: 15*12*5.5cmPackage Include: 2Pcs * Pool Winterizing Plug