Product review (5 stars): Simple affordable DIY kit for noisy dryer bearing
This repair kit had everything I needed to solve my noisy dryer problem.  The "Make sure this fits" hardware model compatibility verification widget on the Amazon product page was a nice touch, and correctly predicted a proper fit with my machine.  Replacing the bearing was simple once I got my dryer opened up and in my case, because I had replaced my belt a little over a year ago, I ended up putting the belt in my spare parts bin for another day.  In my experience, replacing the belt was much more difficult than the drum bearing.  One interesting note, the included instructions call for placing the green slides on the top and the white slides on the outsides but a video I found online showed it the other way around.  FWIW my dryer has been running quietly with the green slides on the top of the bearing.
I have no worries about the plastic material.  It's as solid as the original plastic bearing and even though it's not the exact same mold, it fits perfectly.