9-100-9001 Universal Wall Fitting Connector Assembly for Polaris Zodiac 380, 280, 180 Compatible with Polaris Zodiac 480 PRO, 3900 Sport, Vac-Sweep 380, Vac-Sweep 280, 280 TankTrax pool cleaner models The Blue and Red is Restrictor Disk in order to help water flow restrictor in case the water pressure from the booster pump is too high for the sweeper 1 set 9-100-9001 UWF Connector Assembly.Non Original Aftermarket Part 9-100-9001 Universal Wall Fitting Connector Assembly for Polaris Zodiac 380, 280, 180