This Maytronics 99955956-ASSY Wheel Tube Assembly for Dolphin™ Robotic Pool Cleaners is a reliable replacement part, designed to seamlessly intergrate with the original pool cleaning system. The wheel tube assembly helps ensure the wheel system moves and operates properly. 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.