This Maytronics Dolphin™ 9980039 White Adaptor for Wear Bearing Prox 2 for Dolphin™ Robotic Pool Cleaners is a reliable replacement part, designed to seamlessly intergrate with the original pool cleaning system. The adaptor adds extra functionality and ease of use to the pool cleaner. Maytronics pool cleaners help keep your pool healthy and clean, which is of the utmost importance. Ensure that your pool cleaner is running as cleanly as possible with this certified genuine part.