Review on Mochenli Replacement Parts Kit for iRobot Roomba i7 i7+ i6+ i8 i3+/Plus E5 E6 E7 Robot Vacuum Cleaner - Includes Rubber Roller, Filters, Side Brushes, Dust Dirt Disposal Bags, Replenishment 25-Pack by Jasmine Leon

I bought them mainly for promotional purposes and they are complete rubbish. At first I thought something was wrong with my Roomba and contacted iRobot; They sent new videos. I have found that these spare rollers rotate on their own. When the Roomba tries to vacuum, they don't rotate like they should because the green rubber rotates on its own. If I had never approached iRobot I would have never heard of it and just thought Roomba was getting old and would eventually replace a perfectly good robot. (horrible product)