Item Type: Hair Dryer Diffuser Material: PC Inner Diameter: Approx. 7cm / 2.8in Outer Diameter: Approx. 11cm / 4.3in Bottom: Approx. 16.5cm Height: Approx. 12.5cm Characteristics: Increased caliber, express heat dissipation, air volume adjustment, 3D styling, drying curls, good compatibility Product Use: Home, hairdressers 1Finger Hole: The diffuser has finger holes that allow air to flow evenly around your curls, reducing damage and creating soft and good looking waves. 2Easy To Install: Hair diffuser can effortlessly create curls and volume without damaging your hair, which gives you a better hair style and you will look beautiful. 3Suitable For Salon: Universal hair dryer diffuser is compatible with most hair dryers with a nozzle diameter of 2.17 inches, perfect for home and salon use. 4Reduces Frizz: Universal hair diffuser attachment saves time and reduces frizz, creating perfect curls quickly and effectively, perfect for curly and wavy hair. 5PC: Constructed with durable ABS material, curly hair diffuser is able to withstand daily wear and tear for long lasting use, and it has a long service life.Please allow 1?3cm error due to manual measurement. Thanks for your understanding.1 x HairDryerDiffuser