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

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!

Nice set,works well. Glad I got it.

Exhaust on the riding mower was coming off due to the threaded holes for it being stripped out. I didn’t want to tap the holes to a bigger size bolt, and I didn’t want to have to weld the exhaust to the mower. Just happened to stumble across this, read the good reviews, and decided to give it a try. Couldn’t be happier! They worked better than I could’ve hoped. Easy to use and it seems that they’ll be more durable than if I had tapped the holes bigger. Can’t go wrong with this kit.

Had to replace my header helicoils, the drill bit is great and the insert tools are easy to work with. Would recommend!

Great kit for repair of metric threads. Drill bits are decent quality as well as the taps. Comes with a good amount of inserts. The thread tools are made of metal not plastic!I'm very happy with this kit.

This is a value priced thread insert kit. The box is a nice metal box. The plastic divider in the box, is sturdy and keeps everything tidy. The thread inserts and tools are of good quality. The taps are marked HSS. I used one size of the inserts. I have used multiple brands before. This seemed near as good as the far more expensive brand name kits. I am pleased with the purchase.

I would recommend this product. I bought 2, this being the better one. Used it on a 799 ls exhaust stud that was broke off inside & it had a broken hardened milwaukee bit inside. Sadly I couldn't keep the same stock size exhaust bolt. Had to go 1 size bigger but that Chinese drill bit ATE thru everything & whole process took 5min. So in the end a junkyard run would be 70 plus gas & new head to much $. But now I have a kit & new skill unlocked.

Great set!Fantastic pricing, had stripped out mounting hole on frame brace on my car. Used 1/2 inch tap and dye. Inserts worked well. Got entire set for price of 1 tap/ dye anywhere else.Delivery next day. Cars on the road again