Drill America 12-Piece #21 x 12-in Cobalt Twist Drill Bit Stainless Steel | GLBCOX1221P12 IWD1_I3OVN48

Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium. Display high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed steel. Manufactured to National Aerospace standard 907. 135 split point is self-centering and reduces thrust. Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools, performance is similar to uncoated tools. 12-in overall length for drilling where extra length for reach is required.