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Drill America - DWTPT1/8-1SET 6 Piece NPT Pipe Tap, Carbon Steel, DWTPT Series Set, 1/8", 1/4", 3/8", 1/2", 3/4" and 1" in Wooden Case: Amazon.com: Industrial & Scientific
Starrett T-Handle Tap Wrench - Ideal for Holding Taps, Drills, Reamers and Small Tools - 1/4-1/2" Capacity Tap Size, 3-1/2" Body Length, 3/16-5/16" Square Shank - 93C - Threading Tap Extractors - Amazon.com
Amazon.com: Hanson 1905P Tap 1/2-14 Npt Pipe Pouched, for Tap Die Extraction : Industrial & Scientific
Amazon.com: 1/2-20 Tap And Die Set, UNF Machine Thread Tap And UNF Round Thread Die Right Hand HSS Taper : Industrial & Scientific