3/4-16 Split Die Thread Chaser - Repair threads faster than ever!
3/4" NPS Straight Pipe LH Left Hand Threading Chasers Geometric 1" DS Die Head | eBay
Amazon.com: 3/4"-14 NPS tap and die, 3/4"-14, 3/4"-18, HSS Tap And Die Set UNF Machine Thread Tap And UNF Round Thread Die Right Hand (3/4-14 NPS) : Industrial & Scientific
Airgas - RTC37920 - Ridgid® 12-R 3/4" - 14 NPT High Speed Steel Right Hand Pipe Die (For Stainless Steel/For Use With OO-R, 11-R, 12-R, O-R, Ratchet Threader Or 30A, 31A 3-Way Pipe Threader)