Be careful...there have been a lot of complaints (on Amazon reviews, etc.) that the attachment is NOT universal and doesn't fit on various blow dryers. Deva was making an adaptor piece for it for a while, in response to the complaints. But when I was looking to buy, the adapter piece was out of stock everywhere. So I wound up buying the dryer and the hand, just to be safe...which was a LOT of money.
I would try to get the adapter piece, too...not just the hand, unless you're sure it will fit on your dryer.