Connector Assembly: Universal wall fitting connector for Polaris Pool Cleaner, replaces 9-100-9001. Sweep Hose Scrubber: Compatible with Polaris 180 280 360 380 480 3900 Sport models, for compatible with Zodiac Polaris Pool Cleaner Models 480 PRO, 3900 Sport, Vac-Sweep 380, Vac-Sweep 360, Vac-Sweep 280, 280 TankTrax. Blue & Red Part Restrictor Disk: To help water flow restrictor in case the water pressure from the booster pump is too high for the sweeper. Easy to Install: Just use the needle-nose plier, screw it back into the wall fitting and attach the end to your cleaner machine. No Annoying Noise: Made of sturdy and wear-resistant ABS plastic to ensure long-lasting operation, this wall fitting conncetor could work without annoying whistle sound and leaking problems.