Precision Twist Drill Jobber Length Drill Bit, Series: R18H, Imperial, #78 Drill - Wire, 0.016 in Drill - Decimal Inch, 7/8 in Overall Length, 4XD Cutting Depth, 2 Flutes, Spiral Flute, 3/16 in Flute Length, 0.016 in Shank, Straight Shank, 118 deg Point, Conventional Point, Right Hand Cutting Direction, HSS Cutting Edge, No Through Coolant, HSS, Uncoated, Applicable Materials: Copper, Unalloyed Aluminum, Thermoplastic, Magnetic Soft Steel, Structural Steel/Case Carburizing Steel, Lamellar Graphite, Nodular Graphite/Malleable Cast Iron, Unalloyed Titanium, Unalloyed Nickel, Brass and Bronze