Well, these stylus' are cheap. That's about all I can say about them. They feel cheap and they look pretty cheap. They are hollow 'plastic' and they feel like they will break at any moment. I planned to use them for the iPad, but you have to push harder than is comfortable to make a connection.
I haven't used stylus' before but I can't seem me using these ones either, although I might try a more expensive variety. If I were you though I'd save your money and not buy these.