Evolution SD-9 Step Drill with Straight Flute, 1/4" To 3/4" Hole Sizes

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.

• Versatile tools for producing a range of hole sizes in steel up to 1/8" thick
• Allows for hole creation using a single tool, eliminating the need for multiple drill bits
• Twin Flute Design provides a smooth cutting action without the requirement of pre-drilling
• Features 3 chucking flats on the driving shank to prevent slipping in the chuck
• Number of Hole Sizes: 9
• Hole Sizes: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"
• Shank Diameter: 3/8"
• Shank Type: Straight with Three Flats