Contact Matrix Ring Refills 2/Box Contact Matrix System is a sectional matrix system with stainless steel contoured matrices used to restore the natural tooth anatomy. Contact Matrices are provided in small and large sizes as well as soft and stiff thicknesses. Restores natural contour Ideal contacts Minimizes finishing Retentive and flat tines Occlusal offset Stackable Proximal finishing is greatly reduced or eliminated Contact Ring Refill contains: 1 inward and 1 outward