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This high-quality straight flute tap from Cle-Line is perfect for blind hole threading in general purpose and hard alloy applications. With a class of fit of 2B and 3B and an overall length of 2-1/2 inches, this M2 High Speed Steel tool can handle tough jobs efficiently. Featuring a bottoming chamfer and four flutes for superior performance, this tap is ideal for threading 1/4-28 UNF threads in a range of materials, including general purpose and hard alloys. The right-hand thread length of 1 inch and 25.4 mm can be adjusted with ease to accommodate various material thicknesses. Say goodbye to time-consuming manual tapping processes with this quick and reliable Straight Flute Tap from Cle-Line.