Product review (5 stars): Fixed my Kitcheaid
Bought this kit to replace the broken OEM roller assemblies.  This is a pretty easy fix, with only a screwdriver needed to pry off the old parts and a Torx T15 bit (or driver) to complete the assembly.  Don't worry about saving any of the old pieces, none are re-used.  The new assembly is very well designed and is a solid improvement on the original, however, the part that broke on the originals - the plastic roller retainers - remain made of plastic.  Hopefully they hold up better than the old ones.  As others have stated, the printed instructions are horrible, but anyone with a modicum of mechanical aptitude can figure it out.