Bosch 21 Piece Cobalt Metal Drill Bit Set

What kind of cobalt is in Bosch drill bit?

Bosch Cobalt M42 metal drill bits are engineered with upgraded M42 alloy, containing 8% cobalt. These hard-core Cobalt bits deliver 10x life vs. Standard bits, are jobber length and withstand high-heat applications. The thick web-helix design delivers fast material removal and increased stability.

What kind of drill bit is Bosch M42?

Bosch Cobalt M42 Metal Drill Bits are engineered with upgraded M42 alloy, containing 8% cobalt. These hard-core cobalt bits deliver 10X life vs. standard bits, are jobber length and withstand high-heat applications.

What kind of drill bit is 21 PC?

The split-point tip has been engineered for no-skate starts and clean, accurate holes. The three-flat shank design on bits 3/16 In. and larger promotes better gripping and guards against slipping. 21 pc. Cobalt Drill Bit Set

Which is the best drill bit for cast iron?

A split point quickly penetrates hard metals without the need for a pilot hole. With its M42 drill bits, this set from Bosch is ready to take on the hardest metals, including cast iron. This 8 percent cobalt alloy is more durable than M35 cobalt drill bits, giving it longer shelf life.

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Could these be the toughest cobalt metal drill bits on the market we wonder? Drill Hog claims that the melting point of the special cobalt M42 steel which they have been manufactured from is 2,853 degrees Fahrenheit. Which is pretty impressive stuff!

These drill bits mean business and they can drill through the toughest metals such as stainless steel, grade 8 bolts and spring steel. The pieces have been heat treated for extra hardness and have a 135 degree split point tip to prevent “walking” and a tri-flat shank which additionally prevents “spinning” in the chuck.

Another thing we liked was that the Drill Hog Drill Bit Set comes with a lifetime warranty which means that they will replace any broken parts, should any breakages occur.