No worries about scratches, I'm sure. But that particular design of cheapie cap is actually pretty terrible for a lot of lenses, (Kind of them to show the back, but that's why I say that.
) ...they tend to fit pretty precariously and wear out easily, particularly if you're trying to put em on a filter. It's actually just that they're kind of thin and don't have a lot of 'threads' to grip the filter thread with
A *little* nicer would probably be worthwhile. Doesn't take much. (I don't think I've seen a center-pinch type yet which didn't work just fine, for some reason.)