For repair of damaged internal threads on nuts. Lang SAE coarse thread restorer tap set can chase out damaged threads and remove nicks and burrs without undercutting good threads. Lang coarse rethreading taps are highly tempered for strength and durability, and are 6 point shaped for use with a socket or wrench.

Lang thread restorer taps are color-coded for quick visual identification. Use with standard wrench and light oil. Never use Lang taps to cut new threads or to renew hardened threads. Packaged in a reusable clamshell.