Sold Harbor Freight (Chicago Electric) dual drum (two 3lb drums) Just like this: http://www.amazon.com/Rotary-Dual-Tumbler-Lapidary-Polisher/dp/B0011GGL5K $35 I've used it to tumble thousands of pieces of brass. Probably approaching the 10K mark. Had it three years-ish.. Upgrading.... $35 that's without media. $60 with media (2lbs- 1lb per drum) It fits (per side): 50x .308 cases Or 150-200-ish 9mm Or 125-150-ish .40 Or 100-ish .45 Or 75-100 .223 These levels it cleans on a 4 hour tumble. Use less brass and the cleaning time quickens. I typically run a half drum so I can get sparking clean in a 3 hour roll. 3 hours full will clean but not make them pop like new brass. Prefer picked up within a semi local meeting. Say 25-30 minutes from Albany.