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IRWIN INDUSTRIAL TOOLS Step Drill Bits

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StyleModelNumber Of Hole SizesDecimal EquivalentMaximum Hole SizeMinimum Hole SizeStep IncrementsMaterialFinishShank Dia.Price
A
10311ZR
10.8757/8"7/8"5/32"High Speed SteelBlack Oxide3/8"£54.38
B
11105ZR
130.1969, 0.2953, 0.3937, 0.5118, 0.6299, 0.748, 0.8268, 0.9055, 1.0236, 1.1417, 1.2205, 1.2992, 1.37835 mm5 mm2 mmHigh Speed SteelBlack Oxide3/8"£145.55
C
10502ZR
170.125, 0.1563, 0.1875, 0.2188, 0.25, 0.2813, 0.3125, 0.3438, 0.375, 0.4063, 0.4375, 0.4688, 0.5, 0.5625, 0.625, 0.6875, 0.753/4"1/8"-High Speed SteelBlack Oxide3/8"£130.72

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