Drill America DWDCO29P12 #29 Cobalt Drill Bits (Pack of 12)

The Drill America DWDCO series Qualtech economy cobalt steel reduced shank drill bit is made of heat-resistant cobalt steel and ground to a heavy-duty 135-degree split point. The common flute and overall length allow for minimal adjustment during tool changes, and the precision ground design ensures a high degree of concentricity between the shank and body diameter. This drill bit is ideal for drilling in tough, high-tensile-strength materials.

Cobalt steel tools are similar to high-speed steel, but with more cobalt added for improved performance when cutting harder metals, such as stainless steel or nickel alloys. The gold oxide surface treatment is a thinner oxide surface treatment than the more commonly used black oxide, and the performance of the cobalt steel tools with this treatment is similar to that of uncoated tools.

The round shanks of the drill bits allow for use with a wide variety of toolholding systems. When run in a counterclockwise direction (right-hand cut), the spiral-fluted tools effectively evacuate chips up and out of the cut, reducing the risk of clogging.

The Drill America DWDCO series Qualtech economy cobalt steel reduced shank drill bit is an ideal choice for drilling in tough, high-tensile-strength materials, thanks to its robust construction, precision ground design, and specialized surface treatment.

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