Review on 🔧 OEMTOOLS 25648 Fix-A-Thread Spark Plug Saver Inserts Kit: Metric M14-1.25, Rethreading for Steel, Metal Alloys, Plastic, Magnesium, and More - Perfect Automotive, Truck, RV, & Aviation Repair Tool by Peter Nobles

I'm giving this 5 stars because they do exactly what they're supposed to do and are sold at a lower price than big brands. The variety of lengths seems to cover every application I've come across and fits really well. I would advise anyone looking at them to take a good look at them along with the paste tools available. My personal suggestion is not to buy the OEMTools 25647 kit but to buy the 5334-14 Heli-Coil which works great with these inserts. The difference is that the OEMTools version only works with a wrench, which doesn't work at all in deep or hard-to-reach places. The heli coil kit allows you to use a 3/8 ratchet and an extension to get you where you need to be. This is very important in many applications and the Heli-Coil Kit works in all of these applications. I'm assuming buyers looking at this already know how to use them, so no need to elaborate. These inserts are the same quality as insert kits that use these type of inserts and are the cheapest brand I can find without sacrificing quality. If you're into this style, I think you can't go wrong with this set of inlays.