The Eti universal diffuser will fit most non ionic Parlux, ETI , Kodo Hairdryers, most Babyliss Pro, as well as hairdryers with a non tapered barrel width up to 6 ½ Cm. Generally this hairdryer will fit most professional hairdryers, but is not designed for many retail hairdryers, if you are still unsure whether this diffuser will fit your dryer, please contact us. With a multitude of air apertures the Eti universal diffuser provides a gentle drying effect leaving styles intact. The Eti universal diffuser gives a soft but rapid dry to aid the styling of your hair. The grip tight universal fitting holds the diffuser firmly on the hairdryer barrel/nozzle for ease of use. This diffuser is of the same fantastic Italian high build quality as the famous ETI Turbodryer 2000. Please make sure this diffuser will fit your hairdryer, returns made due to incompatability will incur a £3.00 admin fee. (Dimensions of the apature for this item are approx Diameter 65mm-30mm)