Norseman 29pc cobalt drill set part# 68400. 135Â degree Split Point. Manufactured from M42 HSS containing 8% cobalt which increases high red hardness. Cobalt drills require rigidly held positive feed drilling equipment. Titanium Aluminum Nitride can be used in machining stainless steel, nickel based and titanium alloys, not recommended for aluminum. Manufactured to NAS 907J specifications. Use to drill hard, tough metals, free machining stainless steel, titanium alloys and certain abrasive plastics. Size Range: 1/16-1/2 by 64ths. Material: M42 Cobalt NAS 907J. This 29-piece Norseman COBALT M42 Drill Bit Set is a reliable and durable addition to any tool collection. With sizes ranging from 1/16 to 1/2 inches in jobber lengths, this set is perfect for any drilling application. Made in the USA, the set features a gold color and is suitable for cutting and drilling with any drill. The set includes a multi-bit set with a package quantity of 1 and is ideal for use in power tools and air tools. With the brand name Norseman and model number D-29, you can trust that this set is made with high-quality materials and craftsmanship. Whether you’re a professional or just starting out, this drill bit set is a must-have for any workshop. Type 150 M42 Cobalt NAS 907J. Sizes 1/16″ – 1/2″ x 1/64.