Roomba 600 Series Replenishment Kit

If I was reviewing this product from when I first purchased it, 1.5 years ago, it would have been a 5-star reviews. The parts I received at that time fit my Roomba 650 perfectly and were identical to the original parts that came with it. I just re-ordered this, expecting to get the same quality OEM parts and am disappointed. I ordered a set, and when it arrived, the bristle brush didn't even fit in my 650. I managed to jam it in, but it was so tight it wouldn't spin and messed up the whole operation. The Roomba could barely move and just kind of went around in circles. I returned and ordered again, hoping it was just a fluke. The next set that came arrived last week. The brushes both fit a little better. However, my Roomba doesn't operate at top quality. The bristle brush doesn't seem as high-quality as the authentic iRobot brushes I've used in the past. Those bristles were always relatively firm and great at picking up hair. The bristles in this set seem very soft, and I can tell they aren't picking up much hair (as evidenced by the fact I haven't had to use the red tool to remove any hair in a household with three females with long hair). The side brush also doesn't spin properly on carpet. It's fine on the vinyl kitchen floor, but it now seems to get stuck and not always continuously spin smoothly on carpet. It makes a horribly loud noise, and I can watch the Roomba run right over small particles without picking them up. Because it seems to be working harder to get brushes to spin, my battery is also drained within 10-15 minutes, when, with my previous parts, it would vacuum for close to an hour. I'll probably make do with this set for now, but am sad that it seems even the "authentic" iRobot parts don't really work well and aren't quality anymore.