Replacement hair dryer nozzle designed to concentrate airflow for precise drying and styling. Key features Dimensions: outer diameter 4.9 cm, inner diameter 4.5 cm. Compatibility: recommended for hair dryer barrels with an outer diameter of 4.5 to 4.7 cm. Not universal; please check your dryer size before . Function: directs and focuses hot air to speed styling, reduce airflow spread, and help maintain a neater finish while drying. Design: lightweight and easy to attach for quick nozzle changes during styling. Package contents: 1 Hair dryer nozzle. Only the nozzle is included; hair dryer and other accessories are not included. Visual and measurement notes: the item color may vary slightly due to lighting and display differences. Measurements may vary by plus or minus 1 to 3 cm. Practical use scenarios Targeted styling: use to concentrate airflow along sections of hair for smoother, sleeker results when blow drying. Quick touch ups: attach for fast spot drying at roots or ends without disturbing the rest of the hairstyle. Precision finishing: direct air along lengths to help reduce frizz and create a more polished look while using common home or professional hair dryers. Before buying, confirm your dryer barrel measures between 4.5 and 4.7 cm outer diameter to ensure a proper fit.