Heavy Duty High Speed Steel Jobber Length Drill - 140 Split Point/3 Flat Shank/Black and Gold/Fractional/Import (Drillco 400F Series)

Heavy Duty 140 degree Split Point drill with a Nitride surface treatment that gives a hard protective layer to the drill  (increases hardness without increasing brittleness) and is measurably harder than high speed steel. Body and clearance are gold and black surface treated for maximum lubricity.˜ Recommended for both hand held and CNC operations and usable for a wide range of materials, including difficult to machine materials such as stainless steel. 3-flat shank helps reduce slippage in the drill chuck.