Covell 1-1/2 inch Round-Over Die Set for Mittler Bead Rollers
Buyr.com | Tap & Die Sets | RIDGID 36890 Model OO-R Die Head, 12R Alloy Die Head comes with 1/2-inch High-Speed, Factory Set Dies that Deliver Clean, Precise 14 TPI
RIDGID 47750 Threading Machine Dies, Right-Handed Alloy NPT Pipe Dies with Nominal Pipe Size of 1-Inch to 2-Inches for Universal Die Heads - Tap And Die Sets - Amazon.com
Pipe Thread Tap and Die Set Z NPT 1/8 - 1 Inch Thread Tool HSS Machine | eBay
Amazon.com: 1/2-18 Tap And Die Set, Machine Thread Tap And Round Thread Die Right Hand HSS Taper : Industrial & Scientific