Dormer Jobber Length Drill Bit, Series: R100, Metric/Imperial, 2.3 mm Drill - Metric, 0.0906 in Drill - Decimal Inch, 53 mm Overall Length, 4XD Cutting Depth, 2 Flutes, Spiral Flute, 27 mm Flute Length, Straight Shank, 120 deg Point, 4-Facet Point, Right Hand Cutting Direction, Carbide Cutting Edge, No Through Coolant, Carbide, Bright, Applicable Materials: Alloy Steel, Aluminum, Brass, Bronze, Cast Iron, Copper and Magnesium