EFFICERE 40-Piece Premium Tap and Die Set, Metric Screw Threads M3, M4, M5, M6, M7, M8, M10, M12, Both Coarse and Fine Types | Essential Threading Tool Kit with Complete Handles, Accessories and Case

I thought it was going to be another cheapy junk set like I had just returned from Harbor Freight that I could not even tap and already tapped hole in ABS plastic. what garbage they have. This set is really nice and all the size's are etched into each piece to you know what size you are looking for. Not like the other company that it wiped right off and most did not have them etched. If you don't know what the size is, then what good are they. They were all organized nicely. Worked quickly and perfectly on ABS plastic. Thanks so much. 😍😍

Great product and an additional bonus a Thank you card and a nice free gift. NOW THAT'S HOW YOU DO BUSINESS!!!

Worked exactly as needed. Was able to fix my go karts engine with ease.

Nothing wrong with these basic sets. These don't have frills, and they don't come with instructions, but you have YouTube, or some old mechanic you can ask.I needed to tap treads in some steel, and in brass. So, I did the male and female from dissimilar metals.The process was about as good as you can expect for a basic set like this, and the threads mated perfectly.Not sure how they would hold up if I was doing this all day every day, but that's not what this product is intended for. For what I wanted it was great.A bonus is the incredibly fast delivery from Amazon. Even my local hardware store could not get it this fast.

Just what I needed ! I don’t always use it but it’s better to have and not need it than to need it and not have it ! It’s saved me a great deal of stress ! Works great!

hard to start new threads on HSS. Ending up buying other brand dies for the the project.

I honestly don't know how I went without a tap and die set for so long. These have saved my butt several times this year alone.They also seem to be holding up pretty well despite both my M10 and M12 taps and dies getting a workout.I'm sure there are better sets out there (the wrenches especially are a bit cheap but perfectly workable), but for the money I am extremely happy.P.s.: Make sure to pick up some "tap magic" lubricant which will make everything go smoother and these last longer.

I needed to cut some 6-32 threads in some stainless steel rods used to secure engine baffles underneath the engine for a Vans RV-9 Home-built Aircraft. I tried to make the threads with my Harbor Freight die that is made of carbon steel but it would not even scratch the surface of the stainless rods. I needed a much harder die that could cut stainless steel. I did some research and found that high quality dies that are made of Cobalt Steel, Titanium Steel, or High Speed Steel (HHS) could cut stainless. I happened to find this set and the product description said it is made of GCr15 Bearing Steel hardened to Rockwell 60 and could cut stainless. I didn't know what GCr15 steel was but I found the following definition online: GCr15 steel is one of the most commonly used Chinese bearing steels, it’s a high carbon chromium bearing steel with high hardenability, high & uniform hardness after heat treatment. I also looked up the rockwell 60 number which is based on a standard hardness scale that goes up to 62 so 60 is at the top of the range when it comes to hard steel. I was still a little skeptical since the price of this set was very low compared to other sets or individual dies I could find for cutting stainless. I decided to take a chance and try this set out since it had lots of good reviews saying the taps and dies in this set seemed to work well for most everyone who bought them and also several good comments about the customer service willing to refund customers who had any dissatisfaction with the product. My set arrived from Amazon in 2 days from ordering. I tried them out over the weekend and they cut very nice accurate threads in my stainless steel rods very easily while using a couple drops of tap magic oil. This set performs as advertised, it is made of industrial quality steel that can cut stainless steel. The other reviews also said the handles the set comes with are lower quality but I would say the handles are comparable to the ones that come in a Harbor Freight set. I also found on Amazon a very handy 5 piece set of GearWrench ratcheting handles for taps and dies that fit perfectly with this set and made the job easy. For the money, I don't think there is anything out there that compares to the quality of the steel in this set for cutting hard material.