IRWIN Silver & Deming High Speed Steel Fractional 1/2" Reduced Shank Drill Bit, 9/16" (585-91136)
$19.68
For use in 1/2" drill chucks. Three-flatted shank for secure grip. Coating: Black Oxide; Material(s): Steel; Size: 9/16" On 1/2" Reduced Shank.