General description The IRWIN® HSS Cobalt Drill Bit is designed for precision drilling in stainless steel and other high alloys. With a diameter of 12.0mm, it features a 135° split point for perfect centering and reduced drilling pressure, making it ideal for industrial applications. Technical specifications Diameter: 12.0mm Working Length: 101mm Overall Length: 151mm Material: High-speed steel (HSS) with 5% Cobalt Other information Golden tempered surface finish Industrial quality ground flute for high accuracy drilling and fast chip removal Improved red hardness for extended life due to the 5% Cobalt content