General description The Piece Winterizing Plug for Return Hose Filter Drain Plug with O-Ring is designed for winterizing pools and spas. Made from high-quality materials, this plug is corrosion-resistant and offers excellent durability and stability, ensuring reliable performance during the winter months. Technical specifications Material: High-quality corrosion-resistant material Features: Strong sealing with rubber O-ring Durability: Wear-resistant and aging-resistant Temperature resistance: Can withstand extremely cold temperatures Installation Universal external threaded cap for easy installation Threaded connection allows for direct replacement of old or broken plugs Usage Suitable for winterizing swimming pools Compatible with spa accessories