【Protect the pipeline】: winterizing plug can block the water return pipe to prevent rainwater from entering the freeze and causing rupture of the pipeline, and protect the swimming pool from damage. 【With rubber ring】: Swimming Pool Winter Plug to ensure sealing performance, 5pcs winter plugs can meet different needs, suitable for massage bathtub accessories, swimming pool accessories, SPA accessories. 【Easy to install and 【Use】: Swimming Pool Return Plug directly block the return port of the pipe, no need to use additional auxiliary fixings, it only takes a few minutes to operate easily. 【Wide range of applications】: Rubber winter plugs are suitable for family garden swimming pools, swimming pools, etc. Winter Pool Plug Winter plug can be used as a pipe plug to seal skimmers, return lines and detergent lines. 【High Quality Material】: The pipe plugs are made of high quality plastic, which is durable and can be used for a long time. expansion are made of plastic, conform to standard