Dormer Jobber Length Drill Bit, General Purpose, Series: A101, Metric/Imperial, 12 mm Drill - Metric, 0.4724 in Drill - Decimal Inch, 151 mm Overall Length, 4XD Cutting Depth, 2 Flutes, Spiral Flute, 101 mm Flute Length, Straight Shank, 118 deg Point, Conventional Point, Left Hand Cutting Direction, HSS Cutting Edge, No Through Coolant, HSS, Oxide Treated, Dark Gray, Applicable Materials: Magnetic Soft Steel, Structural Steel/Case Carburizing Steel, Plain Carbon Steel, Alloy Steel and Lamellar Graphite