Evolution Power Tools 1/4"- 1" Straight Flute Premium Step Drill Bit

Evolution Premium step drills are made from the same high-quality M2AL as Cyclone premium annular cutters. These tools are heat treated to 68RC, giving them more durability during tough applications. Evolution Premium step drills are used to produce a range of hole sizes in steel up to 1/8 In. thick using only one tool. The twin flute design allows for a smoother cutting action with no pre-drilling necessary. Evolution Premium step drills have 3 chucking flats on the driving shank to ensure no slipping in the chuck.