EFFICERE 40-Piece Premium Tap and Die Set, SAE Unified Screw Thread, Size #4 to 1/2” | Include UNC Coarse, UNF Fine and NPT Threads | Essential Threading Tool Kit with Complete Handles and Accessories

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

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.

First of all, these are absolutely not premium as the product listing says. Premium taps cost as much or more than this kit for just one tap or die. That being said, these don’t seem to be super bad quality, and if you just need an assortment for the occasional hobbyist use then go for it, you get a lot of sizes for the price. I’m just going to use them for the occasional job in plastic, brass, or aluminum. I wouldn’t expect them to last tapping stainless steel or anything.I will mention that the little thread gauge is pretty much useless on the finer ones, the grooves weren’t cut deep enough. However I didn’t buy the set for that little tool. The die holder and tap holder aren’t anything to write home about, but should hold up to light use.

Works well for an inexpensive set. I have purchased several of these and all have worked well.

Great Kit an a much have when working on your Harley!

Yet another time I was influenced by all the positive reviews and left disappointed. I’m pretty certain there’s a glitch in the review matrix here. The cases are decent, the taps I’ve used so far have all been good but I’ve been going very easy on them as I don’t want them to snap. Every single die I have used cut decent but the size was way off, to the point that they are worthless. Not one of the standard dies will even chase brand new bolts correctly so you can’t even just clean threads with them. The small compression tap holder is decent, the larger adjustable tap holder works but comes loose very easily and must be tightened repeatedly while cutting a thread. The die holder works but is very sloppy as the dies fit loosely.

Bought this for my son, great product

Needed to make 10 taps in some aluminum t-slot bars. Given the choices on Amazon, I could either buy this set or just the tap I needed and a seperate handle for a cost within about $5 difference.I decided to go with this set even with the reviews complaining about the handle.The good news; got all of the taps done and the tap I used didn't break, and still feels pretty sharp (used in aluminum).Bad news; the handle will not stay tightened against the tap. I had to retighten it over and over again.Bottom line, for light duty this set is ok, but you should plan on buying s separate tap handle.Did not used the dyes.