- Barrel Diameter: 1", Bristle Diameter: 1 1/2". These brushes boast a Unique Square Shape Barrel for greater tension control with flat sides for straightening and rounded edges for volume, waves and flips. Enjoy unlimited styling flexibility! New Turbo Barrel grants extra large vents for greater airflow and reduced drying time. The Latest Ceramic Technology makes a ceramic coated barrel that heats up faster and retains heat longer for faster and better styling, superior and long-lasting hairstyles. Tourmaline Ion Technology hydrates the cuticle, adds more shine to the hair while eliminating frizz and flyaways with anti-static bristles. The Unique Bristle Design makes special wavy heat resistant bristles with soft-tips that are gentle on hair and scalp. Unique Handle Design has a snag-free ring and easy-grip ergonomic handle making it lightweight for effortless styling. Handle contains a retractable sectioning pick.