Product review (5 stars): Good overhaul kit and a great value if you want to DIY it.
Our Sears Kenmore dryer heater coil failed so while as I diagnosed root cause I decided to order this kit.  The rollers which I replaced did not make noise and had no play, however since the machine is 18 years old it was just a preventative maintenance to replace them.  This kit came with a new belt and idler wheel as well.  The belt had been replaced a few years ago so that was fine and not really needed.  The idler wheel on the other hand had cracks in the spool ends and a groove worn where the belt had gripped it.  A couple of hours of work, mostly cleaning the lint from all duct work, and we had a well operating machine.  For the price of this kit it was well worth it.  Couple that with 2 days delivery I saved more than $1000 vs. buying a new one.