Perfect Compatibility: The hose ball bearing can be rotated and replaced, which is perfectly suitable for Polaris pool cleaners 180, 280, 380, 480, 3900, spare part numbers: D20, D-20 (Note: not suitable for Polaris 360 POOL CLEANER). Quality Improvement: The pool cleaner hose is made of high-quality materials and has been thoroughly tested by the manufacturer to prevent leakage. To connect 2 feed hoses, 2 hose nuts and 1 hose swivel joint are required. Solve problems: 1) Rotating wear. 2) Part of the joint leaks. 3) The hose becomes stiff and cannot rotate freely. Installation Tips: The arrow always points in the direction of water flow. Water flows from the wall fittings through the pipes to the Polaris pool cleaner. The end of the hose can be softened by submerging the end of the hose in a container (pot or large insulated coffee cup) containing really hot water, making it easy to slide it into the unit. Easy to Install: The pool cleaner hose is easy to install and quick to connect, saving time and costs. Color Name: 3 Kit Specification: Name: Pool Cleaner Hose Material: ABS Packing List: 1*Pool Cleaner Hose 2*Hose Nuts Notes: 1. The pool cleaner hoses are not compatible with Polaris 360 pool cleaners. 2. Due to the lighting effects and shooting angles, there are color differences in the product, please understand. 3. Due to manual measurement, there is a tolerance in the product size.