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Evolution SD-9: 1/4 to 3/4 in. Straight Flute Step Drill
SKU: SD-9
- Versatile: Drills 9 hole sizes from 1/4" to 1" with a 3/8" shank.
- Durable: Made from heat-treated M2AL steel for toughness.
- Efficient Cutting: Twin flute design for smooth cutting; no pre-drilling needed.
- Secure Fit: 3 chucking flats prevent slipping in the chuck. Read more
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Description
SD-9: (9 Hole Sizes) Two Flutes 3/8" Shank
1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"
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" 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.
Diameters
SD-6: (6 Hole Sizes) Two Flutes 1/4" Shank
3/16", 1/4", 5/16", 3/8", 7/16", 1/2"
SD-9: (9 Hole Sizes) Two Flutes 3/8" Shank
1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"
SD-10: (10 Hole Sizes) Two Flutes 3/8" Shank
1/4", 13/32", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1"
SD-11: (11 Hole Sizes) Two Flutes 3/8" Shank
1/4", 25/64", 35/64", 11/16", 13/16", 7/8", 1", 1-1/8", 1-7/32", 1-1/4", 1-3/8"
SD-12: (12 Hole Sizes) Two Flutes 3/8" Shank
3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8"
