Thread Repair Tool, File, Chase, Restore, Repair, and Clean Internal and External Thread: Male, Female, Inch, Metric and Pipe Thread (RT1) (3/8 Dia. Head x 2 Length x 1/8 Arbor) by Rotary Thread

Cuts fast use with care. Quick

Im a mechanic. Damaged threads are just part of the job sometimes. The case that brought me in contact with this tool was a spindle on the rear end of a Dana 80 truck axle. It would have required a $200 3 threading die. I decided to try this tool. I took something that looked beyond repair and transformed it to the point where the large lock nut spun on by hand. It takes some skill. Its not a toilet plunger. You need to have a steady hand and a good Dremel tool but the payoff is quite impressive. Its a tool anyone who works on anything threaded should have. It saved my butt and a buttload of money as well.

I bought this to clean up the threads on a part where the threads were distorted by welding. This tool cleaned them up nicely in a matter of minutes. I also used it to clean up the rusty threads on our main drain clean-out fitting which was pretty messed up after nearly fifty years. Fifteen minutes later the threads on the drain and cap were cleaned up and the cap securely screwed on. I would suggest when working on heavily damaged threads that you stop occasionally to flush the rust or metal particles out of the threads. And no matter what, flush them out when you are done.

If you have to repair threads, this is the tool you need, my only suggestion is order the larger one, also do not add pressure to the tool lay it in the damaged threads lightly run along threads,

Not easy to use...maybe for bigger thread would work ..but the wheel axle thread it didnt

This thing is great, only used twice for one application, so cant speak for longevity. The shank is stepped to go in both a drill or a rotary tool which is handy. The finishing cut is great for what it is, this is poor/lazy mans tap and die set. Works amazingly on make threads. Little difficult on female threads but only because they are more difficult to reach. If it takes a year to wear out Im coming running back to buy another.

Havent used it yet but looks like a good quality tool... stay tuned..

It fix any bad thread. Highly recommended. Easy to use.

Ruined the threads on a crankshaft and this fixed them

Works exactly how the description said it would.