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Drill America - DWTHXNPT-Set 6 Piece NPT Pipe Die Set, 1/8", 1/4", 3/8", 1/2", 3/4" and 1", Rethreading, Carbon Steel, Wooden Case : Amazon.ca: Tools & Home Improvement
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910766-5 Tap and Die Set: 41 Pieces, 1/2"-20 Min. Tap Thread Size, 1/2"-20 Max. Die Thread Size | Imperial Supplies
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