Unbreakable is an extremely resilient high-performance material used for the fabrication of removable partial den-tures. It offers the ideal degree of flexibility, uncompromising aesthetics and guaranteed unbreakability. tcs Unbreaka-ble is available in a variety of shades, sizes and diameters. 25 mm diameter is used with the tcs processing equipment. tcs Unbreakable is also available in 22 mm and 28 mm for use with a variety of thermoplastic injection equipment.