T3 SinglePass Curl X Extra-Long Barrel 1" Curling Iron with 9 Heat Settings and Ceramic Barrel for Fast Styling and Lasting Results on All Hair Types A professional curling iron with an extra-long barrel and ProGlide clip design team up to style wide sections, long hair, or hard-to-reach areas in one quick, exceptionally smooth pass. 9 heat settings deliver healthy styling for all hair types. And Digital T3 SinglePass Technology ensures perfect heat precision—no hot or cool spots—across a custom-blend ceramic barrel for high-gloss, healthy-looking curls and waves that last.