ATE Pro. USA - Cobalt Twist Drill Bit Set - 13 Pcs Hex Shank High Speed Steel for Stainless Steel, Sheet Metal, Wood, Plastic Plates, Aluminum Alloy, Quick Change, 1/16"-1/4" Professional | Industrial
The cobalt drill bits are an excellent choice for drilling hard alloy steels, tool steels, spring steel, and aluminum alloys. They can withstand very high temperatures and still retain the sharpness of the cutting edges. Unlike Titanium Bits
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ATE Pro. USA - Cobalt Twist Drill Bit Set - 13 Pcs Hex Shank Quick Change