As many other reviewers have pointed out, they are tiny. And because of their size, they're a bit tricky to set up. In my case they were exactly the sizes I needed and I was initially enthusiastic and even bought a few more. But then I discovered that they aren't very good for holding power tools (of course most people won't use them for that) as the nuts loosen and eventually fall off. Since that's what I got them for and haven't used them in any other application, I can't comment on how well they work for standard purposes. Just be aware that they are small and inexpensive, so set your expectations accordingly.