Lang Tools 2584 15-Piece Metric Thread Restorer Set, Black , Gray

Some threads in my motorcycle’s subframe were damaged and coated in red Loctite residue.Hoping to avoid drilling out and cutting new threads, I used this set to chase out the original threads. With a moment or two of very easy work, the threads are once again in perfect condition. Very happy with the result.

I am working on a neglected Nissan Xterra. There is a lot of rusty fasteners and this really helped restore those rusty threads.

I never used these before, but picked up a set for recent engine work on my 10+ year old pickup. I will never do auto repair without them again. These things were essential to freshen bolt holes in parts (especially aluminum ) that have not been apart since the truck was built. Taps are way too aggressive and could easily cross- or re-thread a hole. Very useful for removing old thread-lock compound and generally cleaning rusty bolt threads for easier re-assembly. Re-assembly of some of the parts would have been a nightmare if the threads were not chased first (e.g. re-attaching exhaust manifolds to the heads).As others have stated, go slow with these like a tap. Finger pressure (or manually turning a socket) is enough to use the chasers. Be sure to use cutting oil, and clean parts afterwards especially if torquing. The classic turn, back-off, turn method works good here...take your time and they work great.

Great set and quality at a very fair price. Been using for 4 years for a car restoration...lots of bummed up nuts, studs, and bolts. Has been a life saver. Customer support is excellent as well. I realized, after 4 years, that my set mistakenly had an extra M8 die in place of the M6 that should be there. Contacted customer service to send me another one and they did so without hesitation. Much appreciated!

I did some suspension work on my 2015 Outback and this set covered the fasteners well. I previously bought a combined SAE + metric set from the same company, but it focused more on SAE and disappointingly did not have the fine/extra fine metric stuff. This set does. The case is crap, thin plastic stapled. If you want to use the case, make sure not to rip the staples out by just pulling the pieces apart. You should unbend the staples and pull them.Would've liked a combined set of metric + SAE that has ALL of the stuff or complete, separate, metric and SAE sets that have decent cases. The combined set (which, again, is lacking metric things I needed) has a half-decent case at least.

Nice quality

Got me out of a pickle when a part I ordered for my motorcycle came with bolts that were just a little too short and I managed to get one cross threaded into the frame and damaged the way-too-soft threaded hole. Thought I'd made a real mess but the kit cleaned up the threads easily and without stripping everything. Note it doesn't come with instructions so search the web for the right way to use one of these kits - if I recall you want to clean everything out first the best you can (with compressed air or the like), lubricate the business ends of the tools with 10W40, do everything just finger tight (no wrenches or sockets), turn the tools just until you get a bit of friction then back them out to clear out any material you've removed and repeat. Go slow and these do a great job. Oh yes, and the 'case' is junk but at this price I'm not complaining.

I've only used this a couple times so far, but it seems like a good tool to have in the garage. I had to replace the rear struts on a 10 year old car. The top mount had a pair of studs welded into the wheel well that were pretty rusted up. The replacement mount came with new nuts, but they were very stiff to thread onto the rusty studs. Due to the positioning it would have been near impossible to run a die up the studs, but these thread chasers are perfect. I loaded it up with a little Tap Magic and hand threaded as far as it would go. From there I'd turn it on about a full turn with a wrench, then back it off a quarter turn and repeat. It scraped off a lot of rust and gunk. After chasing both studs I hit them with a little brake cleaner to remove the cutting fluid, and the nuts were then able to hand-thread all the way up the length.It probably wouldn't have been an issue to just run the new nuts up the studs, but due to the difficulty in replacing the studs if I snapped them, it felt much safer to clean them up first.I've also used the thread file to clean up some large threads on an axle... they're not perfect, but better than they were. There's definitely a technique to it, and I plan to practice more.