Incredible quality!  Every piece of this hardware set is so well made.  The metal is thick and heavy and there's no play whatsoever in the towel ring or toilet paper holder.  The towel bar and robe hook are rock solid as well which is to be expected.  Grohe hardware is so worth it over any of the other 'typical' faucet and fixture brands out there.  The difference in quality is very noticeable.