Threading set HS-26UNF ( 25 Pcs ) in metal cassette to produce Unified National Fine threads from UNF 1/4" up to UNF 3/4", consisting of 7 HSS bright finished straight flute hand tap E524-NO1 with a 6-8xP taper lead, 7 HSS bright finished straight flute hand taps E524-NO3 with a 2-3xP plug lead, 7 HSS bright finished adjustable circular split dies F330, 2 straight handle tap wrenches L112 for taps with a square drive within a range from 1 up to 12mm and 2 straight handle die stocks L110 for dies with an outside diameter and thickness within a range from 1x3/8 up to 1.1/2x1/2" for 1.5xD through or blind hole threading in free machining and plain carbon steel and copper or copper alloys
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