Vulcan Drill Bit, 5/16 In Dia X 4-1/2 In L, Straight Shank, High Speed Steel, Titanium Nitride Coated

Titanium nitride coating reduces friction and last longer, cutting edge stays sharper longer. Split point eliminates the need for a center punch and keeps the drill from skating. All sizes 3/16 in and larger have three flats on the shank for a better grip on chuck.