General description The 2 Pcs 2 Inch Pool Winterizing Plugs are designed to effectively seal pool return lines during winter, preventing water from entering the pipes and allowing for pressure testing. Made from high-quality rubber and metal, these plugs are durable, reusable, and suitable for both indoor and outdoor swimming pools. Technical specifications Quantity: 2 rubber plugs and 2 white threaded pool return pipe plugs Size: 51 mm (2 inches) Material: High-quality rubber and metal Color: White and black Measurement allowed error: +/- 1-3 cm Installation Simply screw the rubber plug into the return and drain ports after draining the water to prevent water from entering the pipes. Usage Ideal for winterizing pools by sealing return lines Can be used for pressure testing of pool systems Suitable for various inlet and outlet configurations in above-ground pools and swimming pools Other information