#5 M42 Cobalt Twist Drill Bit (12-Piece)

Drill America D/ACO Cobalt Jobbber Length (Standard Length) drill bits. Drill America D/ACO cobalt drills are manufactured to National Aerospace standard 907. These drill bits display high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed steel, and are especially effective in drilling tough, high tensile strength materials like stainless steel, Inconel, and titanium. The 135° split point is self-centering and reduces thrust.Effective in drilling tough, high tensile strength materials like stainless steel, Inconel, and titaniumDisplay high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed steelManufactured to National Aerospace standard 907135° split point is self-centering and reduces thrustGold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools, performance is similar to uncoated toolsJobbber length (standard length) drill bitsJobbber length (standard length) drill bits