Re: RCBS PREP CENTER??
Giraud chamfers and deburrs. Otherwise, the K&M de-burr tool does a much better, more consistent job of de-burring. Dewalt cordless drill works better and is quicker for primer pocket uniforming, flash hole de-burring and neck brushing. Bought one used, put it up on eBay the same day. I could stop the rotation with my fingers. Slow, underpowered junk, IMO.