Plug in. protect. Worry-free. Your search for the perfect swimming pool winter plug is over Use 63mm antifreeze plugs to protect your swimming pool from the harsh winter. A simple solution to prevent serious damage to your swimming pool.One plug, multiple uses: as a pipe plug, it can be used for water outlets, return flows and cleaning pipes-to prevent water from entering the pipes in winter. Expansion plugs are also used for other purposes, such as pressure testing swimming pool pipes or other leak detection methods, or preventing water flow from the swimming pool during equipment maintenance.To provide you with support: Heavy-duty plugs are made of stainless steel bolts and rubber compression bodies, which are corrosion-resistant. Can be used every day. Will last for multiple seasons. Will not regret it after purchase.Colour: BlackMaterial: rubber + stainless steelPackage Contents:1 x pool plugOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.