Plugs can tolerate extremely cold temperatures without slipping or shrinking. Helps prevent damage to plumbing lines due to the expansion of frozen water in winter. Fits most accessory parts of pool filters. 1.5 "threaded pool spa winter plug for above ground and inground pools during the winter season. Made of high quality plastic, easy to use and install, waterproof strong for durability and safety. Buy products, we make our effort to give you more protection so that you can enjoy a better life. Description: - 1.5 "threaded pool spa winter plug above and in ground pools during the winter season. - Made in high quality plastic, easy to use and install, strong seal for durability and safety. - Helps prevent damage s to plumbing lines due to the expansion of frozen water in winter. - Plugs can tolerate extremely cold temperatures without slipping or shrinking. - Fits most filter accessory parts pool. specification: - Material: Plastic - White color - Size: 5.5x5.5x3.5cm / 2.17 x2.17x1.38 inch Package Include: 1 Piece Drain Plug Note: Please allow slight dimension difference due to different manual measurement.