Power IQ Curling Iron Features a 360° swivel cord for easy use and less tangling. I believe the barrel is 3/8 inch. I purchased it to create tight, small curls, but I just don’t have the time or patience to use it. Power IQ brings clean, sophisticated style with their White and Gold Professional Series Spring Curling Irons. Triple plated 24K Gold Plated barrel creates silky, sleek curls quickly. Bundle to save! Get 15% off when you bundle 2 or more items. Feel free to send offers — I love them! Always open to reasonable offers.