I just received this drawer storage unit as part of my top-shelf Keurig setup my wife bought me for Christmas. (This is paired with a Keurig 2.0 K575 brewer)  I was skeptical at first because I wasn't sure I was going to be able to use my Keurig maker due to its height on the counter, but with a press of the release to lift it up off of the stoppers and engage the wheels, the entire unit can roll forward so that it is clear of the cabinet above it.  The roller is smooth, the drawer is smooth, and it holds A LOT of K-cups! (I have no idea why some people are having issues with their K-cups catching - I have zero issues with mine.)