This is a great set. There's a flat strip around the sides of the ball-ends that provides additional surface area to transfer a lot of force, without damaging the inside of the hex fastener. The groove between the ball-end and shaft is shallow, so the balls don't break off. The trade-off is a bit less wobble angle, but I'll take that over fastener damage and snapped-off ball-ends (which I've experienced using another brand). The fit in fasteners is accurate, with almost zero play. The set also includes wobble extensions which provide additional offset angle when needed, like for the shifter linkage on my Harley. Downsides? The chrome isn't show quality, and the two longer 1/4" drive extension bars aren't wobble types. This set is an absolutely fantastic value for the price.
For the less than $20 I spent I really am not complaining about the product, it is just that I had to finish the manufacturing process myself. It is what it is. The extensions are fine. They are in line with other recent Chinese sockets with the quality being margininally better than it was at first. Now the sockets with the bits, that is another story. The quality out of the box is horrible. They are beginning to rust. They are filthy from manufacturing. It is like the makers have no pride at all in the products they produce. I took them out of the box and cleaned them all. I deburred several on my wire wheel then polisher. I degreased then sealed and baked the bits to season them so they they don't rust anymore. These are all things that even cheap tools typically would have done. They are much better now but they should be like that out of the package. You just never saw things like this when they were made in the USA. Heck I never saw anything like this before regardless of where it was made, even other Chinese tools. 2 stars for 1/3rd of the tools being okay out of the box.
The 3/16" hex key broke just above the ball head the first time I used it. I didn't over torque it so I can only assume that there was a casting flaw in the material.
My local ***** doesn't have that particular item in stock (or any of the other Craftsman tools that I need to replace) and calling the Craftsman 800 number is totally useless. I spent no less than 2.5 hours trying different options on the call tree and every person that I talked to either sent me back to the top of the tree or hung up. Not a single one could transfer me to the Craftsman tool warranty line. I have also sent 3 emails over the past 2 months and have not received an answer to any of them. Sadly Craftsman tools have gone down in quality and their current warranty reminds me of the line from the movie Tommy Boy: "If you want me to take a dump in a box and mark it guaranteed, I will." The Craftsman "Lifetime Warranty" isn't anything more than a label on a box if you can't exchange a broken tool for a new one.