Gy-Roc Vibrahone Model A Vibrating Rock Tumbler is designed for rock or jewelry finishing. Fast, gentle and easy to use, it"s built for hard daily use. Unique adjustable upper and lower eccentric weights do a better job on dense loads, like steel shot. The A-model bowl has a 10 pound capacity. Backed by a one-year limited warranty. * Vibrating rock polisher * Fast, gentle and easy to use * 10 lb. capacity * Cyclonic effect moves objects throughout bowl * Perfect for rock tumbling or jewelry finishing * Adjusts for high-density loads * 2-speed 115V motor * Dimensions: 13 diam. x 12H inches * Bowl: 9.5 diam. x 3.5H inches * 1-year limited warranty Note: We do not recommend using anything coarser than 120/220 in a vibratory tumbler.