Review on 🧹 EZ SPARES 2Set Replacement for Robot ROOMBA i Series E5 E6 I7 I7+: Multi-Surface Rubber Brushes & Vacuum Cleaner Accessories by Jessica Green

They don't have the layer of foam inside that the originals have, so they sound like they're rolling gravel across the floor. Another consequence is that hair gets stuck in the space where the foam should be, curling up and breaking the plastic end that attaches to the Roomba itself. This actually damaged my Roomba by applying too much torque to the hole the roller goes in and breaking it. Their only advantage is that they are cheap.