Efficient protection of swimming poolsWinter plug pool can plug the drains or pipes of swimming pools to prevent water from flowing into the pipes in winter and freezing them and damaging the drainage system of the pool. Protects nozzles and drain holes from freezing. High quality materialsThe pool winter plug is made of high quality rubber and stainless steel wing nuts. Strong and durable, corrosion and rust resistant. No pungent smell. Easy to InstallThe pool inlet nozzle rubber plug is easy to install. You just need to find out the diameter of your pool water pipe, then buy our pool plug and close the drain. It is a very practical accessory for winterising swimming pools. Widespread useThe pool plug is versatile, it can be used not only to plug swimming pool water pipes, but also to plug backflow pipes in winter to prevent water from entering the pipes during winter months. Also suitable for pressure testing or maintenance of pool pipes.