Precision Twist Drill Taper Length Drill, General Purpose, Series: QC91P, 11/16 in Drill - Fraction, 0.6875 in Drill - Decimal Inch, 9-1/4 in Overall Length, 6XD Cutting Depth, 2 Flutes, Parabolic Flute, 5-3/8 in Flute Length, 11/16 in Shank, Straight Shank, 135 deg Point, Radius Split Point, Right Hand Cutting Direction, HSS Cutting Edge, HSS, Bright, Applicable Materials: Magnetic Soft Steel, Structural Steel/Case Carburizing Steel, Plain Carbon Steel, Lamellar Graphite, Alloy Steel/Hardened Steel, Tempered Steel, Free Machining Stainless Steel, Austenitic and Ferritic + Austenitic Martensitic