1/16 - 1/2 Cobalt Jobber Drill Bit Set, Shatter Proof Case, 29 Pieces (1/64 Increments)

Heavy Duty 135 Split Point, Cobalt Steel, Jobber Length, manufactured to National Aerospace standard 907. The bits in this cobalt jobber drill bit set 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. This 29-piece cobalt drill bit set comes in a rust resistant, water and shatter proof BIT Cooler case, Premium Grade Steel

Cobalt bits are the greatest for drilling annealed ready to work steel. They will outlast high speed steel bits four to one so they are worth the little bit extra they cost. If you're on a budget, we also offer a 29-Piece HSS Drill Bit Set.

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