Product review (4 stars): No serious problems
These were shipped coiled in the opposite direction from how you want to install them, held with multiple rubber bands.  This made installation a tiny bit frustrating, but they did snap into place nicely and do the job very well.  Replaced the upper felt at the same time and this solved the noise and the gap at the bottom of the drum which tended to allow small items to be caught and destroyed when they rotated to the top of the drum.  Good purchase.