Irwin Aircraft Extension 3/16 in. Dia. x 12 in. L Black Oxide Split Point Drill BitIrwin Aircraft Extension 3 16 in. Dia. x 12 in. L Black Oxide Split Point Drill Bit Brand Name: Irwin Diameter: 3 16 in. Overall Length: 12 in. Material: High Speed Steel Product Type: Split Point Drill Bit Shank Type: Straight Shank Number in Package: 1 pc. Packaging Type: Carded Finish: Black Oxide Design: Aircraft Extension Flute Length: 2 5 16 in. Ideal for drilling in hard to reach areas and for running wires and cables Constructed of M 2 high