NWT! Beautimeter Hair Dryer Brush, 3-in-1 Round Hot Air Spin Brush Kit for Styling and Frizz Control, Negative lonic Blow Hair Dryer Brush Volumizer, 2 Detachable Auto-Rotating Curling Brushes The rotating hot air brush is a convenient styling tool that combines hair dryer, hair comb, and hair styling tool all-in-one. Its round-shaped barrel helps to create soft, loose curls and straight styles. This Hot Air Styler comes with 2 interchangeable spin brushes. The 1 1/2” barrel is great for shorter bob length styles, layers, and fringes. The 2” barrel is suitable for shoulder length hair or longer.