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

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

Cuts fast use with care. Quick

While I didnt use this exact thread repair item (I found one at the local auto parts store before this one got here) I filed both internal and external threads. The one I got at the auto parts store is the same as the one I ordered from Amazon. (kept both of them) These were 22mm left hand wheel studs and nuts, didnt know this was possible. Worked like a charm!

Works great! Was really easy to use in my dremel.

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.

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

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,

Great tool to fix and reform threards that may be damaged, rusty or very gunked up.

Ruined the threads on a crankshaft and this fixed them

I purchased this tool after watching a review of a similar product on YouTube. This one is very similar if not the exact product. Works great with a high rpm impact drill. Also it does take a little getting use to at first, my suggestion is lock down whatever your working on and use two hands to control the direction of the drill as well as the recoil of the spinning bit. Also go with the direction of the drill while using. LIFE SAVER!!!