Metric Helicoil Thread Repair Kit: 131-Piece Heli Coil HSS Drills Inserts Taps & Tools M5 M6 M8 M10 M12 Automotive Engine Spark Plug Cylinder Insertion Rethreading Tools Universal Rethread Restorer

Firstly, this comes in a metal case, which is very welcome.I’ve used this a few times now and had no problems. The drills have worked absolutely fine, the taps too. No problem fitting the inserts though the tang at the bottom doesn’t always break off when it should, though it’s not caused a problem.So far it has made repairing damaged threads a breeze, the installed inserts have worked great. Last repair was a coolant pipe retaining bolt on an engine. It was quick, easy, the bolt went in first time after the repair was made and no leaks.Highly recommended!

This is a great kit that has pulled me thru some tough repairs on internal threads!There are way more inserts than I will ever use but it’s great knowing I am covered in the instance that I might need one for an emergency!I repaired a few threads in my motorcycle subframe that seem to always be a problem when threading in steel bolts into an aluminum frame! Worked great and saved me from a trip to the dealership for a more expensive repair. I have also used them to install handles on my tractor and made a cue ball shift knob for my car with the inserts. For anyone curious, pool balls need helical insert or the bolts will shatter the threads!Kit comes with the appropriately sized drill bit, helicoil specific Tap (this is not a regular thread sized tap), helicoil Installation tool, and helicoils in several sizes.I Highly suggest this kit to any mechanic or DIY person because sooner or later you will need it!

Only used the M6 coils so far, but they worked great. All the required tools in one kits is excellent, and a decent quantity of each size mad installation a breeze. My first time students had no issues installing in minutes.

To be fair, what I received looked like the main picture. I found 5 (one of each size) of bits, taps, insertion tools, and breaker pins (20 items), and 110 repair coils, 25x(M5,M6,M8,M10) and 10xM12. The front of the box indicates the remaining item should be one hex wrench. Presumably, this means some sort of tap wrench to hold the tap while it's driven into the recently-drilled hole.Overall, it's a good set for the price. Just be aware you'll probably want a tap wrench--or two, since there don't seem to be many that can secure all five sizes. You do want something that will help keep the tap square to the surface while you're cutting new threads. Hopefully the seller rectifies the issue, or at least changes the description. I see that the SAE set also seems to lack a tap wrench, but at least the box doesn't list that you should be getting one.

This kit worked great. I stripped out my abs module on my truck and was able to fix it with this. Still holding great.

This fixed a thread issue on my vehicle. Was worried I would have to create new threads, but this kit was a life saver. Use lots of cutting oil and go slow for the magic to work.

For the cost it’s a good value and does what it says. As others have pointed out there is no tap wrench/handle. Thankfully I had one on hand. Normally I’d drop a star but honestly I don’t see it in a picture or description that it is actually included.Anyway, does the job, worked as expected with no problems. Used it to fix fairing mount holes on a motorcycle I’m overhauling for someone.Hole drilled out (ended up doing a pilot hole with cutting oil with some bits I already head) before doing a pass with what came in kit. New fairing bolt goes in without any issues.Would recommend for anything that doesn’t need a timesert.

Perfect set for broken or stripped threads, this Heli-coil set saved me $150 by doing it myself instead of a motorcycle repair shop, which more than paid for the entire set with money left over, Excellent quality!!