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Irwin Hanson - #4-40 to 1/2-20 BSP, Metric Coarse, Metric Fine, NPT, UNC, UNF, Die and Drill Set - 77261675 - MSC Industrial Supply
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IRWIN Tools 76 Piece Machine Screw/Fractional/Metric Tap and Hex Die Super Set (26376) : Amazon.ca: Tools & Home Improvement
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