IC3 inverted cone HP (handpiece) Shofu Dental Dura-Green silicon carbide finishing stones, box of 12 stones. Reinforced with silicon carbide. Designed with standard abrasive point shapes. Ideal for porcelain, gold, amalgam, and composite finishing. Features handpiece shank and friction grip. Dura-Green Stones are composed of silicon carbide that makes them ideal for fast contouring and finishing. By using a concentric motion, these stones provide a long-lasting surface definition and adjusting details.Dura-Green Stones are specific for porcelain, gold, amalgam, and composite finishing. They are custom-designed with standard abrasive point shapes in the handpiece, friction grip, and contra-angle shanks.