This Maytronics Dolphin™ 99955955-ASSY Wheel Tube Assembly TT for Dolphin™ Enduro 11R and Caddy CB, and Prox Battery is a reliable replacement part, designed to seamlessly intergrate with the original pool cleaning system. The tube assembly protects critical component within the pool system. 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.