51/64'' Reduced Shank Cobalt Drill Bit, 1/2'' Shank, Drill America, D/Aco51/64

Surface Treated Flutes, Cobalt Steel, Bronze Color Oxide, Reduced Shank, Silver And Deming, Size: 51/64, Dec. Equivalent .7969, Flute Length 3, Overall Length 6, M42 Cobalt, Premium Grade Steel