Designed for Compatibility: This soft smoothing brush is specifically designed to fit for models HS01/05, serving as a perfect replacement for part no.971891-05. Its precise engineering ensures seamless integration with your device for optimal performance. Tailored for Fine Hair: Engineered to tackle the challenges of fine hair, this brush helps in achieving a smoother and straighter hairstyle. It gently manages fine strands, reducing the risk of damage while enhancing the hair's natural sleekness and shine. Advanced Frizz Reduction: Experience a noticeable reduction in frizz and flyaways with this innovative brush. Its design aligns with the natural flow of your hair, promoting a sleek, shiny finish that lasts throughout the day without the usual hassle. Automatic Airflow Adjustment: Equipped with cutting-edge airflow technology, this brush automatically adjusts its settings to match the brushing direction. This feature ensures a uniform and smooth finish, making it easier to achieve professional-looking results . Versatile Daily Styling: Whether you're for a straight look or just a simple comb-through, this attachment is your go-to tool. It's ideal for daily hair care routines, offering flexibility in styling while maintaining the health and integrity of your hair. Color:As Shown Material:plastic Package Contents: 1 * Soft Smoothing Brush Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.