Review on 🧹 RONGJU 20 Pack Replacement Parts for iRobot Roomba i7 i7+ i3 i3+ i4 i4+ i6 i6+ i8 i8+ j7 j7+/Plus E5 E6 E7 Vacuum Cleaner, 2-Pack Rubber Brush Rollers, 6-Pack HEPA Filters, 6-Pack Side Brushes, 6-Pack Vacuum Bags by Robert Zander

Replaced the rubber brushes and started the vacuum. He made a lot of noise, checked the brushes, they fit, but when the vacuum came on it made too much noise. When I paid attention, I noticed that the brushes are not spinning at the right speed, but are jumping and making noises. I then pulled out the rubber brushes and compared to the original brushes and they are slightly smaller which causes them not to rotate. It doesn't cost any money. I need to find a way to return or replace the brushes or find other proper brushes. I recommend at least not for i7.