Vulcan 251511OR Jobber Drill Bit, 1/2 in Dia, 6 in OAL, Reduced Shank

M-35, 5% cobalt and extra thick drill core for optimum life and durability in hardened steel, super alloys, titanium and stainless steel applications, split point minimizes bit walk. All sizes 3/16 in and larger have three flats on the shank for a better grip on chuck.