Amazon.com: NPT Pipe Tap and Die Set - 14 Pcs 1/16", 1/8", 1/4", 3/8", 1/2", 3/4" and 1", Rethreading High Speed Steel Taper Taps and Carbon Steel Hex Dies : Industrial & Scientific
DWTHXNPT114 1-1/4"-11-1/2" Carbon Steel NPT Hex Pipe Dies - Amazon.com
Value Collection - Tap & Die Set: 1/8-27 to 1 - 11-1/2 Taps, 1/8-27 to 1 - 11-1/2 Dies, NPT - 03959905 - MSC Industrial Supply
1-1/4" 11-1/2 NPT X 2.5" Hex Pipe Die Nut NPT Rethread CS A1 417-08012 | eBay