Kalabhai ultrarock die stone That produces a homogenous coating on the die stone and plaster attributed to its viscosity.This ultrarock die stone protects models against abrasion specifically at the marginal area which is most prone to breakage. The film does not disassociate from the die while building a wax pattern due to heating. it is a rapid setting and thereby reduces working time. Thus, it is the perfect choice for the users. This is long lasting and a quality product that serves for a very long time.