Irwin® Speedbor® Drill Bit, Standard Length, Series: Max Speed™, Drill Style: Self-Feed, 7/16 in dia, 6 in Overall Length, 3 Flutes, Tapered Flute, 1-3/4 in Flute Length, 1/4 in Shank, Quick-Change Shank, Right Hand Cutting Direction, High Speed Steel Cutting Edge, High Speed Steel, Bright Irwin® Speedbor® 3041015 Max Speed™ Standard Length Drill Bit, 7/16 in dia, 6 in OAL, 1-3/4 in L Tapered Flute, 1/4 in Shank