51mm Pool Winterizing Plug Rubber + Stainless Steel Swimming Pool Winter Expansion Plug with Screw

• 【Versatile Application】Designed as a pipe plug for winter pool maintenance, preventing pipe entry and protecting against freezing. Also useful for pressure testing and backflow prevention during equipment maintenance.
• 【Durable Construction】Made from high-quality rubber and stainless steel, ensuring stability and longevity. Cold-resistant design prevents slipping or shrinking, allowing for long-term use.
• 【Easy Installation】Simply screw the plug into the return water inlet to effectively protect your pool pipes from damage and potential freezing.
• 【Multipurpose Use】Suitable for above-ground and in-ground swimming pools, outdoor pools, kitchen and bathroom sinks, and small indoor pools. Can also be used as a pipe plug for connecting storage devices.
• 【Prevent Pipe Bursts】These threaded plugs for pool return pipes help prevent pipe bursts during harsh winter conditions, ensuring your pool system remains intact.

Specifications:

• Material: rubber + stainless steel
• Size: large head diameter: 52mm, small head diameter: 44mm, applicable diameter: 51mm hole