CHI Spin N Curl in Onyx Black 1' Ideal for Shoulder-Length Hair. CHI Spin n Curl 1" Ceramic Rotating Curler, an automatic hair tool designed to create curls and waves with minimal effort 1" Ceramic Barrel: Distributes heat evenly and produces negative ions for shinier, healthier-looking hair. Includes three presets for different hair textures: Low (370°F) for fine hair, Medium (390°F) for medium hair, and High (410°F) for coarse hair. Offers customizable curling times (15s, 17s, 19s) to achieve various curl types. Equipped with a 1-hour auto shut-off, auto temperature lock, and a protective heat barrier to prevent burns. Features an anti-tangle function to safely release hair if too much is inserted