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Double Margin Straight Flute Step Drill
A step drill incrementally increases in size, enlarging the hole as the drill bit cuts through the workpiece. Meanwhile, the second margin on this cutting tool burnishes the hole as the main margin creates it, creating a smooth finish and an accurately measured hole. In fact, this type of step drilling often eliminates the need to reaming altogether. Valley Tool offers the quickest delivery in the industry for custom step drills!
Also see Double Margin Straight Flute Drills and Step Drills
