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TAP CATEGORYTap & Die Set. SIZE RANGE TAP DIE4-40 - 7/16-20. Adjustable handle tap wrench. 17 pcs of tap. 2 pcs of T-Handle tap wrench. Thread Type Thread Size Range. 1 pc of screw pitch gauge. M2 grade steel has a good red-hardness and retains its cutting edge sharpness longer than other general purpose high speed steel, but not as shock resistant or as flexible as other HSS grade with less tungsten.
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