Easy to Use 14 24 UNS Tap and Die Set for Cleaning and Repairing Pipe Threads
And internal threads on the muzzle or muzzle device. Great for muzzle work. for crafting or repairing males. 1 1/4"-24 UNS Tap. UNS - United Special Thread. 1 1/4"-24 UNS Die. Application in shallow cuts.