Features1Use the freeze plugs to protect your pool against the harsh winter season. A simple solution which prevents your pool from running into serious damage. 2Used as pipe plugs, to plug skimmers, returns and cleaner lines to prevent water from entering the pipes during winter. 3Expansion plugs have other uses too, such as pressure testing pool lines or other methods of leak detection, or stopping water flowing from the pool when equipment repairs are made. 4Made of high?quality rubber, it has maximum expandability and can make sure a tight sealing. 5Built to meet or exceed standard specification, strictly follow factory quality control.SpecificationCondition: Brand NewItem Type: Expansion PlugsMaterial: Rubber Color: As shown in the pictureSize: Approx.51mm/2inWeight: Approx.190g/6.7ozApplication: Used as pipe plugs, to plug skimmers, returns and cleaner lines to prevent water from entering the pipes during winter. Expansion plugs have other uses too, such as pressure testing pool lines or other methods of leak detection, or stopping water flowing from the pool when equipment repairs are made.Package List2 x Expansion Plugs