Product review (1 stars): Krazy / Super Glue works better!
Yes the part is an exact replacement and is easy to install.  But just like the original it will likely fail again.

I've had 3 rollers fail pretty much as everyone else has described, each lasting about 1 year.  After replacing 2 adjusters, I had enough.  The 3rd time I did as others suggested and glued it on.  I would suggest applying the super glue along the perimeter/face of the roller that touches the adjuster as well as glue in the center of the roller where the snaps broke off.  So far my super glue has lasted about 4 months and we run it 1-2 times per day.  If it does break again it is a cheap easy fix to glue it again.

I do not notice much more difficulty in sliding the drawer open and close.