This unit worked great for a number of uses. Over time, I noticed the roller mechanism felt like it was grinding during turns. Eventually, this led to wobbling with the two rollers, until the roller mechanism finally locked up and refused to turn. I opened the unit to see if I could figure out what the problem was. Turns out the metal rod that the crank connects to is a much harder metal than the rest of the unit, and over the time, the harder metal wore out the softer metal components on the inside.
The durability of the roller was extremely disappointing. The cutting component still works well though.