1. Easy installation: This ball-bearing swivel joint D20 is designed for simple installation and use. Simply connect 2 inlet hoses with 2 hose nuts and 1 hose swivel. No complicated steps required. 2. Compatibility: Replace your old or worn swivel with this ball-bearing swivel joint. It is specifically developed for Zodiac Polaris pool cleaners: 180, 280, 380, 480, 3900 Sport, 280 F5B, TR35P. Perfectly compatible with these models for optimal performance. 3. Durable and practical: Made from durable material, this D20 ball-bearing swivel joint is built to last. It offers reliable operation and long-lasting performance, reducing the need for frequent replacements and enhancing usability. 4. Efficient functionality: The ball-bearing swivel joint D20 enables smooth, efficient movement of your pool cleaner hoses. It allows hoses to move freely without tangling or sticking, ensuring uninterrupted cleaning performance. 5. Use scenarios: - Replace a worn swivel on Zodiac Polaris pool cleaners to restore hose movement. - Upgrade older pool cleaners to improve hose routing and prevent tangling. - Install on new pool cleaner setups to ensure consistent, uninterrupted cleaning.