Review on CyberTech Replacement iRobot Roomba 3 Armed Side Brushes for 500, 600, 700 Series (Excluding 645, 655, 675 & 670, 671, 690) by Lisa Hill

They do not match the Roomba 600 series directly. The supplied screws are too short. If you try to use a standard screw, the skirt will be too big to fit the hole. I had to enlarge the screw hole with a utility knife to use a standard screw. The brushes are approximately 1/4 inch longer than a standard sweeper, resulting in thick carpet edges being pulled up and bent. I do not recommend this. You can get them to work and they can work with Roomba units other than our 600 series, but my advice is just buy genuine iRobot parts.