General description Replacement 3-armed side brushes designed for iRobot Roomba vacuum cleaners, compatible with the 500, 600, and 700 series models, excluding 645, 655, 675, 670, 671, and 690. This pack includes three side brushes along with screws for easy installation. Technical specifications Product dimensions: 5.08 x 0.51 x 5.08 cm Product weight: 18.1 g Compatibility and accessories Compatible with models: 510, 530, 532, 535, 540, 545, 550, 552, 560, 562, 570, 580, 581, 582, 585, 595, 600, 620, 630, 650, 660, 700, 760, 780, 790 Not compatible with models: 645, 655, 675, 670, 671, 690 (which use brushes from the 800 series) Two types of screws available: long with wide head and short with narrow head, both compatible with the brushes Installation First, place the brush onto the machine. Then insert and tighten the screws. (See installation video for guidance)