Lenox Tools Step Drill Bit, 1/2-Inch to 1-Inch with 3/8-Inch Shank (30882VB2)
These LENOX Vari-Bit Step Drill Bits feature a 2-flute design that cuts fast, clean, round holes and removes chips rapidly. The steam-oxide coating lengthens the life of each drill bit, and the split-point design starts on contact for fast penetration and less walking.