Maytronics Dolphin Diagnostic Wonder Brush (6101610) gridcontrols The no overlay format makes this The no overlay format makes this version especially useful in replacement work where the panel body needs to be swapped but the final visible face has to be matched separately to the exact layout of the spa this full DE grid helps restore dependable filtration performance and contributes to cleaner overall system operation This brush has practical value because the Wonder Brush style is intended to support a particular contact and cleaning behavior beyond a plain replacement roller Brush components are central to how effectively a robotic cleaner grips