does not fit most dryers [SEP] i bought it specifically because so many people were saying it fit their dryers that were my brands unfortunately i got it took it out of the box to look at it did not realize my husband threw away the box when i was not paying attention and by the time i got it into the bathroom a day or two later and check if it fit with my blow dryers i did not have the box to return it i have three completely different hair dryers you would think it would have fit at least one nope it did not fit any of my three blow dryers i have a vidal sassoon conair and a revlon again they are all different and different sizes too it did not fit any of them i offered it to my friend i said just bring your dryer over tho to test it first hers different than all mine did not fit either i walked it over to three different neighbors and none of theirs fit i am so curious how this is fitting so many other peoples is there an attachment needed i am very dissapointed as it was not cheap so now i am out the money plus i still need a diffuser and this thing is rather large and taking up space in my drawer because i do not like throwing away anything new be careful when buying it apparently it does not fit many dryers at all