New 14mm 14X 1 Left Hand Tap and Die Set

does the job

Super easy to use and threads like a boss

Buying this saved me a lot of money

A perfect addition to any airsofter tool kit

Great

as others have mentioned, work great if making muzzle accessories for airsoft weapons. build quality is good, and both tap and die produce accurate threads. have used to clean up threads on older airsoft weapons and silencers as well as making new items. if you are in to modifying your airsoft arsenal, recommended