These Kodiak Cutting Tools® solid carbide straight flute drills are designed for hardened materials and feature a 140 degree split point.Premium Sub-Micrograin Solid Carbide Straight Flute Drill Bits140° Split PointDesigned for Drilling Hardened Materials ALTiN CoatedStub Length These drill bits require rigid toolholding and workholding to be run properly and avoid breakageALTIN Coating: A high performance coating for drilling stainlesssteels, carbon steels, alloy steels, and cast iron. This coating is extremely heatresistant and can be used with or without coolant..