This Irwin® 10502500 HSS Pro is an industrial quality 19-piece twist Drill Bit Set with outstanding performance and long service life. Set of 19 HSS Pro Drill Bits: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9.
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