Rock collecting can be a fun, educational and interesting hobby, teaching youngsters and adults about natural history. The Model T has a single watertight molded-rubber barrel with a one-quart capacity. It also has a 115-volt, 1/250th hp impedance-protected motor, and a heavy-gauge steel base. Comes with enough polishing grit to do complete polishing process in one barrel; 12-oz. package of rocks to get your budding rockhound started; jewelry kit and a book on rocks. Dimensions: 6" x 6" x 7-1/2" high.