When it comes to finding replacements for In-Floor cleaning jets, look no further than RetroJet®. RetroJet® delivers replacements for most every In-Floor cleaner ever made. Thanks to our highly advanced engineering, RetroJet® not only replaces original cleaning jets, it also can help improve overall cleaning compared to many of the original models. Simple To Use, Simple To Install Installs Into Existing Collars No New Reaming Required Improved Cleaning Installs In Seconds Improved Hydraulics Paramount Pool Products Replacement RetroJet® Nozzle for Caretaker 99 Threaded and Bayonet, Aquatech Pools Aquatech, California Pools HydroClean,and Polaris Systems. NOTE: THIS IS NOT A THREADED NOZZLE. THIS IS THE STANDARD BAYONET RETROJET® NOZZLE REPLACEMENT FOR CARETAKER 99 SYSTEMS. FOR THE THREADED NOZZLE, CLICK HERE.