Product review (5 stars): Easy to install and fixed my issue
Our home came with a really noisy dryer.  It made a loud thumping sound every time the drum would rotate.  We're going to replace the dryer but I wanted to wait a bit longer so I researched the cause of the noise.  After looking at a few youtube videos I narrowed down the cause of the noise to bad drum rollers.  Replacing the rollers should have taken no more than 30 minutes but due to the fact that the previous rollers completely disintegrated I spent about another 30 cleaning up the old residue and shavings.  The install was pretty easy.  Look for step by step youtube videos to show you how to do it.  No more thumping noise!