Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys;Round shanks allow use with a wide variety of toolholding systems;When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging;Heavy web 8 percent cobalt content permits use at higher speeds in hardened stainless heat treated and high temperature alloys;1/2-inches standard shank diameter

• Michigan Drill 303C Series Cobalt Steel Reduced Shank Drill Bit, Round Shank, Spiral Flute, 135 Degrees Notched Point, 3/4 Size (Pack of 1)
• 3/4"

Michigan Drill 303C Series Cobalt Steel Reduced Shank Drill Bit, Round Shank, Spiral Flute, 135 Degrees Notched Point, 3/4 Size (Pack of 1)Michigan Drill Corporation