Review on Sunex 321Md 8 Inch Impact Socket by Kevin Hutchison

I am an in-house auto technician for a well known luxury car manufacturer. Also, I currently have multiple Automotive Service Excellence (ASE) certifications on my way to becoming a Master Technician! Always ready to try something new, I finally ordered some sockets from Sunex! I use a 3/8 drive percussion gun for most of my work, 1/4" and 1/2" are used when needed. So I bought 21mm, 19mm and 17mm sockets, standard and deep, with 3/8 drive. Unfortunately my excitement went away when I first used the 3/8 21mm Deep Impact! It appears to be just over 21mm. When using these wheel removal nuts, all 19mm and 21mm nuts will stick to the wheel nuts. It's very annoying and I've bought six outlets that I'm not comfortable with. Maintenance takes twice as long when you spend half the time removing fasteners stuck in the impact head! I bought six heads, 3 cutouts and 3 standards. 17mm, 19mm and 21mm. I figured if I use them for some time the sockets will eventually wear out a bit and stick less often. For several months without improvement. I no longer use these sockets on customer cars and keep them as spares, they seem random to most people. My advice, buyers, be careful. During operation, they can round off clamping nuts and various fasteners.