Crazy for Curls 9-18MM | ⅓” - ¾” - Springy, Spiral, Perm Curls Achieve perfectly carve-out tight, voluminous, and bouncy curls or sweet, innocent twists with the ISO Beauty tapered twister. This thin and lightweight twister offers a 9-18mm (1/3 inch - 3/4 inch) unique press action tourmaline barrel that heats up to temperatures of 400 degrees F and styles in seconds while delivering negative ion technology to lock in endless shine in your delicate strands. A clipless wand design allows you to wrap hair easily, and release it without the risk of singeing, snagging, or crimping your locks. As a bonus, the 9-18mm twister includes a Heat-protective Glove and a Tangle-Free Swivel Cord that make it easy to style with.