Product review (5 stars): Inexpensive Fix (better than expensive new dryer)
Our dryer had been squealing for months, then it started making very loud clanking noises.  The rear bearing was worn to the point the small ball bearing in back dislodged into the main bearing holder, hence the clanking noises.

This replacement kit was relatively easy to install (one person job) and took care of all the noises.  Last year I had replaced the teflon pads (they had worn out completely and the dryer was eating our clothes).  In retrospect, I should have replaced the rear bearing at the same time.

Drum is a tight fit when taking it out of the dryer, but still not difficult to remove.  Plenty of videos on the internet to show how to replace the bearing.

For well under $20 this was a great deal -- much better than having to buy a new dryer.