Precision Twist Drill Short Length Drill Bit, Heavy Duty, Series: M40CO, Imperial, 1/2 in Drill - Fraction, 0.5 in Drill - Decimal Inch, 3-3/4 in Overall Length, 2.5XD Cutting Depth, 2 Flutes, Spiral Flute, 2-1/4 in Flute Length, 1/2 in Shank, Straight Shank, 135 deg Point, Split/Self-Centering Point, Right Hand Cutting Direction, HSS-E Cutting Edge, HSS-E, Bronze, Applicable Materials: Alloy Steel, Ferritic + Austenitic, Free Machining Stainless Steel, Hardened and Tempered Steel, Martensitic, Magnetic Soft Steel, Nickel, Nodular Graphite/Malleable Cast Iron, Plain Carbon Steel, Structural Steel/Case Carburizing Steel and Titanium