This Maytronics Dolphin™ 9993072 Wave Igus Bearing and Holder Assembly for Dolphin™ Wave 300 and 200 XL is a reliable replacement part, designed to seamlessly intergrate with the original pool cleaning system. The assembly securely contains intergral components with 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.