Rock Tumbling is a hobby that your whole family can enjoy! Tumbling is a simple way to polish agates and other gem stones. If you are truly interested in producing flawless gems through the tumbling process, this Model A-R2 Rock Tumbler is ideal. Versatile two-barrel, 6 pound capacity tumbler. Uses two 3 pound capacity, long-life, molded rubber barrels. Ideal for small batches of single-type stones for jewelry making or for brass polishing. Heavy continuous duty, fan-cooled motor (overload protected).