This is new Thumler's medium size vibratory unit. This is a single 18 pound bowl & lid with a vibratory drive unit (industrial quality). Very long-lasting. A little noisier than the Tagit tumbler, but the bowl is heavier and will last longer. Always purchase an extra bowl for your vibratory units. One for your polish powders and the other for your Silicon Carbide grits. That's because the grit will embed in the bowl & will mess up your polishing efforts. Carries a full manufacturer's warranty. Priced to sell!