When I installed the brush and filter from this kit, my Roomba started clicking almost non-stop. One of the filters that came with it was completely unusable as the gasket was only half attached to the frame. The brush looks very similar and appears to be made the same way, but the handles were bent at an odd angle, and although the handles were the correct length, the filaments of the brush were too long. Another reviewer mentioned that the brushes banged against the wheel. This is normal and the supplied brush also reached the wheel well. If the machine is serviced upside down, the wheels will be fully extended giving the appearance of hitting the wheel. During operation, the wheels are pushed into the compartment and the brush does not reach the point where the wheel touches the ground. However, the extra length of these parts means it is, and I believe that is where the clicking sound comes from. I have ordered new spare parts from the manufacturer and will compare them with this set. If the problem persists, I will amend this rating to indicate that the problem is with my device and not the replacement parts (and I will also send my device to the manufacturer for repair). FYI I have an iRoomba 880.
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