New Generation Ceramic Hot Tube Brush This new generation ceramic coated hot tube brush from Mira diffuses heat from a hair dryer rapidly and evenly, shortening drying time. Ceramic distributes heat consistently, without damaged hot spots. The soft cushion grip and light weight of Mira Ceramic Hot Thermal Hot Tube Brushes make them comfortable to use while offering superior control. Ideal for smoothing, volume and movement. X- Large. Features: 70mm ceramic barrel – for faster styling on extra-long to long hair Ideal for smoothing, volume and movement on all hair types Ceramic barrel shortens drying time Superior Italian made quality *Please note this is measured this is measured by the diameter including the bristles.