Chamfer mills do not come to a point. Premium Sub-Micrograin Carbide Drill Mill2 Flute Single End ALTiN CoatedALTIN Coating: A high performance coating for milling stainlesssteels, carbon steels, alloy steels, and cast iron. This coating is extremely heatresistant and can be used with or without coolant. Please reference the chart below for chamfer mill dimensions.