DeWALT DWA1228 Pilot Point Bit Drill Bit, Parabolic Flute, 4-1/16 in L Flute, 3-Flat Shank, 3/8 in L Shank

Built for speed and long life, powers through hard metals with ease. A split-point tip starts on contact and eliminates bit walking for helps to increased control. Heavy-duty cobalt delivers 4X more life than black oxide.