Infinuvo Replacement Brush Set for Hovo 510 Series and Compatible Robotic Vacuums Infinuvo replacement soft brushes for Hovo 510 series. Also fit bObi robot vacuums. Replace brushes regularly to keep your Hovo 510 and Hovo 510 plus at peak performance 1 bristle brush and 1 beater brush are included. Also works with other compatible robot vacuum cleaners.