Irwin 5026006 Drill Bit, 5/16 in Dia, 4 in OAL, Percussion, Spiral Flute, 1-Flute, 1/4 in Dia Shank, Straight Shank

Nickel plated for fast, smooth performance. Carbide tip can be used for rotary drilling applications also for deep drilling. Slow spiral for quick and easy debris removal, 7/16 in and larger drill bits have reduced shanks.