Compatibility: The AFDD includes 3 sizes hair curling barrel (tapered barrel, 1.2in, 1.6in). No matter which version you own, you can create waves, spirals, or loose curls, all in one set. This long barrel nozzle Compatible with Shark FlexStyle HD400 Series. Notes: Not Compatible with Shark FlexFusion/Glam HD600/ HD6000 Series. Not Compatible with Shark SpeedStyle/Pro/Pro Flex Hair Dryer Precise Curling Near the Root: Conical curling barrel for shark flexstyle engineered to style closer to the root for defined, polished curls, lifts and wraps hair for a smooth finish using advanced airflow Two Directions, One Barrel: Curl clockwise or counterclockwise with one attachment—no need to switch long curling barrels mid-style, perfect for symmetrical styles or alternating curl patterns Quick, Automatic Wrapping: Simply attach hair curler and let airflow attract, wrap, curl, and set strands automatically, hands-free styling using airflow for better control For Medium to Long Hair: Curling barrel attachment for shark flex style designed for medium and long hair lengths, wraps larger sections while maintaining curl shape and body AFDD Conical Long Hair Curling Barrel Attachment Compatible with Shark FlexStyle, Self-Curling Accessories for Shark Flex Style HD400 Series with Both Curl Directions for Tapered Curls