Product review (5 stars): Same dimensions as OEM.  Seems to be working great.
Dryer started making a loud banging noise.  It was one of the front drum rollers totally clogged with hair and binding so bad it was no longer round.  I replaced all 4 of my rollers, but really the rears looked perfect.  The other front roller was a little worn but still appeared to have plenty of life.  I'll just save them for spares.  My spindles looked fine other than being dirty and clogged full of hair.  I took the time to clean everything and used just a little bit of graphite powder on the spindles.  The dryer is 9 years old and it needed cleaning badly.  Everything was coated with lint and hair.  It works like a new dryer now.

Also, the screws were very difficult to break loose with a screw driver.  I actually stripped one of them.  An impact driver worked great breaking them loose.