Brand new, never used diffuser attachment for the Shark Flexstyle hair dryer system. Came with my flexstyle but I have straight hair. --- ​The Shark FlexStyle® Curl-Defining Diffuser attaches to the Shark FlexStyle® for fast, even drying from root to tip. To enable curl-perfection, our diffuser features retractable and extendable prongs. Retract prongs for shorter, finer hair and less heat on the scalp. Extend prongs for longer, thicker hair and for reaching and lifting at the root. Compatible with: HD400BK, HD440BK, HD440BKCCO, ​HD450TL, HD450TLC, HD442OR, HD442BP, HD442PL, HD463BKH, HD435, HD430REF, HD435REF