This set is comparable to another high end brand that I own except for the price that is much less especially if you can get it on sale. The tips are tough and the diamond coating definately adds more grip to prevent rounding out fasteners. The keys lock in at 90 & 180 degrees and the release mechanism is easy to operate with your thumb. I liked this enough that I purchased both the inch & metric set.
Really like the locking function. Using on multiple set screws I don’t have to keep looking for which wrench I was using, it stays locked in place and the others stay closed too.
This item is awesome wished I had it years ago
it comes very handy I bough several