Drill Bit HSS 5/16″

Makita D-22399, 5/16 Inch Fractional Reduced Shank Black Oxide Drill Bit.
Best used for drilling into light-gauge metal, high-carbon steel, aluminum and ally steel, cast iron, stainless steel and titanium. Each high speed steel bit is hardened and tempered for long life and high performance in tough applications..Ideal for general wood drilling and especially for making dowel holes. The lip and spur tip design helps to prevent tearing wandering on flat surfaces. Produces clean cuts.