Step Down Drill Bit Unibit

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Drill multiple hole sizes with this 1/4” – 1-3/8” hole diameter titanium coated step down/up drill bit. Features include: HSS Titanium nitride coated for long life 10 sizes in one bit. Ideal for thin metals. Self-starting tip eliminates skidding and the need for center punching Two flute design for faster, smoother cutting 1/8” increments Sizes include: 1/4”, 3/8”, 1/2”, 5/8”, 3/4”, 7/8”, 1”, 1-1/8”, 1-1/4”, 1-3/8”. Show more