Product review (5 stars): Thank you internet for letting me know that I needed this when I was replacing the belt
My dryer shredded it's drive belt and while looking for a replacement, found notes that people had replaced this part as well. Sure enough, upon inspection, the blower wheel was loose on the motor shaft, probably nearing failure. Easy replacement, highly recommend you have a circlip tool with small points though, the points on the Harbor Freight tool aren't small enough.