This Maytronics Dolphin™ 99955957-ASSY Wheel Assembly Dynamic Pro-X2 2010 TT for Dolphin™ Pro X2 115V CB, Prox 2 Blue 115V, and Pro X2 115V CB 2013 is a reliable replacement part, designed to seamlessly intergrate with the original pool cleaning system. The wheel assembly ensures full range of motion in 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.