I bought this to take some links out of a watch also purchased through Amazon.  I can't complain too much because the thing worked, but it's really cheap and I don't think it will last long enough to use again (if I ever need that).  It took a really long time to ship too (over a week to get in the mail, and then another week until I receive it).  So I received my watch and then had to wait another week for this tool.  If I would have known it would take that long I would have just gone to a jeweler and paid them to do it.  It's only a few dollars either way.  Overall, if you're expectations aren't real high, then you'll be fine.