Qualtech GLBCOX125/16 Heavy Duty Aircraft Extension Drill, 5/16 in Drill - Fraction, 0.3125 in Drill - Decimal Inch, 135° Point

Qualtech Aircraft Extension Drill, Heavy Duty, Series: 563, 5/16 in Drill Size - Fraction, 0.3125 in Drill Size - Decimal Inch, 12 in Overall Length, 3-1/16 in Cutting Depth, 2 Flutes, 3-1/16 in Flute Length, Round Shank, 135° Point, Split Point, Right Hand Cutting, Cobalt Cutting Edge, Cobalt, Gold, Applicable Materials: Inconel, Stainless Steel and Titanium. The 135° split point is self-centering and reduces thrust. Ideal for drilling in mild steel where extra length for reach is required. They have at black oxide surface treatment that is abrasion-resistant, reduces chip welding and improves chip flow.