this review title is: does not fit a inch dryer and the content is: i measured my blow dryer before i ordered this diffuser because at the time the description said it would fit a inch blow dryer it does not not even close nor does it fit my other blow dryer it also does not screw on as the description says i suppose if it did fit as advertised it would work as well as any other diffuser.there are other information for this review, one is this reviewer did purchase it and the other is 0 people think this review is helpful.