I am a tool and die maker. Been using Sunex tools for 8 years now. I am happy with them.Got this set to go with my new Dewalt impact. As expected, quality is good and support will be good.I did have an issue with the 1/4 size bit. The 1/4 is slightly oversizes and would not fit in the screw/bolt. I had to polish the coating off to try and fit it. Still, without the coating was oversized. I kept polishing the tip of the bit till I reached the proper size. We are talking about 0.002 to 0.003. Tiny numbers but when it comes to steel and fittings it makes a difference. Two of my co workers have same Sunex set. One had same issue as me and the other one did not.

Overall this is a nice set of hex impacts. There are several very large hex sizes in this set that I probably didn't need but its a nice set to have. I have some chrome hex bits that have broken so wanted a impact rated set to use.

I have broken all other tool sets like this one, I just can't seem to break these. This was my first Sunnen purchase but I am definitely replacing more of my tools with Sunnen.

The shaft leading to the Allen head is to large diameter to use on some applications.