Label: Yes Material: Rubber Size: 25mm, 32mm, 45mm, 51mm, 63mm Type: Expansion Plug Color: Black These expansion plugs are made of high-quality rubber with stainless steel screw bolts, providing reliable and stable performance. Resistant to rust and breakage, they are durable and long-lasting. Designed for pool winterizing, the plug seals swimming pool pipes after draining to prevent water entry and potential freeze damage. Easy to use—simply screw the plugs into return and drain inlets for convenient installation with minimal effort. Ideal for sealing skimmers, returns, and cleaner lines during winter months to keep water out of the plumbing system. The multifunctional design allows use in pressure testing pool lines, leak detection, or stopping water flow in pool systems. Package Includes: 1 x Expansion Plug