Replaced the plastic rollers on my garage doors with these. Perfect fit. Garage door installer wanted $100 per door to replace them. Buying these here is much cheaper and it took 30 minutes to replace all of them and lube them up. Can't really tell if they're quieter than the cheap plastic rollers since they weren't noisy to begin with. I think I just fell for the repairman's scare tactic to sell more parts. At least I did it cheap.