HDMontana:
How much do they cost? Thanks

I would like you to try looking on Ebay, that's were I got mine

What are those stainless pins called and what size are they?

I started with the stainless tumbling about a year ago and will NEVER look back. I use a tablespoon of Dawn and a 1/2 teaspoon of lemishine. The are clean and shiney, and the primer pockets are always clean. You can find the media and tumblers at http://www.stainlesstumblingmedia.com/

Does it work just as well with centerfire rifle cases?

It works as well on everything!