Thumler's model AR12 is a serious piece of lapidary equipment. This, their second to largest rotary rock tumbler, features a large, 12 pound capacity, hexagonal rubber barrel for larger loads of larger stones. The unit runs quiet , polishes efficiently and is built for a long life of lots of use. As with all "A" series tumblers from Thumler's Tumbler, the AR12 utilizes a powerful, fan-cooled, continuous duty motor with built in overload shut-off.
The AR12 is also a versatile tumbler which can be adjusted to run two 3 pound barrels for running your smaller stones.