Centrifugal Tumbler are used mainly for comprehensive finish treatments - Roughing, Grinding and Polishing of very small objects. These machines incorporate the spin speed of a main course with four containers which rotate around their axis, but in the opposite direction of the main course. This combination of movements, combined with the particular shape of the inner containers made of polyurethane [anti-wear and anti-aging] and the new "Swing System", provides a fine finish.