Precision Twist Drill Jobber Length Drill Bit, General Purpose Standard Length, Series: D33W, Imperial, #66 Drill - Wire, 0.033 in Drill - Decimal Inch, 1-1/4 in Overall Length, 3XD Cutting Depth, 2 Flutes, Spiral Flute, 5/16 in Flute Length, 0.033 in Shank, Straight Shank, 118 deg Point, Split/Self-Centering Point, Right Hand Cutting Direction, Carbide Cutting Edge, No Through Coolant, Carbide, Bright, Applicable Materials: Magnetic Soft Steel, Structural Steel/Case Carburizing Steel, Plain Carbon Steel, Alloy Steel/Hardened and Tempered Steel, Lamellar Graphite, Nodular Graphite/Malleable Cast Iron, Brass, Bronze, Abrasive and Non-Ferrous Materials