General description These 5pcs Swimming Pool Winter Plugs are designed to effectively seal pool return lines during the winter months, preventing water from entering and causing damage. Made from durable plastic with a rubber O-ring, these plugs are suitable for use in hot springs, swimming pools, and spas. Technical specifications Material: Plastic with Rubber Ring Color: White Product Size: Approx. 5.5 x 3.3 cm (2.2 x 1.3 in) (W x H) Inner Diameter: 4.8 cm (1.9 in) Outer Diameter: 3.81 cm (1.5 in) Weight: Approx. 107 g (3.8 oz) Package List 5 x Winter Pool Plugs