Dentcraft Tools have the highest strength to size ratio in the industry. Dentcraft Tools consulted with professional metallurgists to choose the appropriate steel for each particular tool. We use several different high carbon steels in a set. In quality control testing our material choices far exceed the stainless steel tools in strength. Our high carbon, hard tempered spring steel is costly to produce, but to the serious PDR professional, Dentcraft Tools strength and design will meet or exceed your expectations.