This is one goodie that I have managed to survive without up until now, but its utility is obvious and I do wonder why I haven't rounded one up yet. I am no fan of case trimming, and this power unit would handle the aspects of the work I despise most--chamfering the case mouths post-trim. Running the RCBS primer pocket brushes with the unit would be nice, as well. I think you guys have "sold" me on the idea. Add "What Bret Said" as well.