I had just bought a new double-wide garage door, and looked at the rollers that came with it - looks like junk to me. I searched and found these, so as the installation happened, these rollers are in from the very start. Why wait a year or two and then replace the originals? Looking forward to a long smooth life from these!
The product was exactly what I needed and fixed the opener. The only issue I had was the original piece had threaded holes and the new one did not. I had to run out and get a few nits and bolts, but all-in-all it was an easy and effective repair.