Review on 🧹 ECOMAID Filters and Brushes for iRobot Roomba 800 & 900 Series - Essential Vacuum Cleaner Parts and Accessories by Marko Forth

The countersunk screw slot in the brush head is not big enough for the screw to reach the Roomba nut. I'll try to drill a bit before throwing it away. I'm not very hopeful, but it's worth a try. In the attached picture you can see the difference. Obviously the original brush is a dirty worn out brush. Roomba's screw fits snugly into the countersunk hole in the original, but sticks out in the replacement. I guess I have to stick to the official Roomba details. Very disappointing. (Didn't they test it? Or even visually compare it?)