Irwin 10225 Unibit Step Drill Sets 4 Piece Set

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The IRWIN Unibit High-Speed Steel Step Drill Set features single-flute cutting edges for greater control and more precise drilling. Three-flatted shanks prevent the bits from slipp ing in the drill while the non-skid self-starting tips eliminate skidding and the need for center punching. Set includes #1, 2, 4, and 21 size step drills. Single-flute cutting edge for greater control through steps 3 flatted shank prevents slipping in drill chuck Non-skid self-starting tip eliminates skidding and the need for center punching. Show more