Stone Tumblers are used for tumbling and polishing rough rock, stones and pebbles, including those found on the beach, and glass! These are all high quality lapidary machines to give a professional finish to your samples. The tumblers can be used with a variety of grits, most commonly Silicon Carbide Grit and Zinc Oxide. All our stone tumblers come with a one year guarantee, with full customer support. We sell complete stone tumbling kits for beginners.