Thumbler's Tumblers make a very good vibratory brass tumbler. It held up better than a RCBS, Lyman Turbo, or 2 Frankfort Arsenal. The Thumbler's uses the same heavy duty motor that the rotary rock polisher uses. It lasted about 8 or 9 years of heavy use while the others lasted on average 4 years! Costs more but worth it!

Ivan