I just used my Turbo 1200 for the first time and it came with 3 bags of media, but I only used 2 of them. I didn't want to over fill the thing, but in retrospect I assume they sent 3 bags because that is what the capacity should be. I tumbled 60 .223 brass for about and hour and fifteen minutes and they look pretty clean. The media is some greenish stuff so I'm guessing it's corn cob. I picked up an indoor timer thing to plug it into so I don't end up leaving it running all night if I happen to have a bout of old timers or too many rums.