This set features thirteen titanium nitride coated high speed steel drill bits with an advanced 135° split point. Thirteen-piece titanium nitride coated high speed steel drill bit set. Drill bit sizes: 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.2 mm, 3.5 mm, 4 mm, 4.5 mm, 4.8 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm.
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