Designed for comfort, these crochet hooks feature and an exclusive in-line crochet hook, which helps reduce wrist motion and helps you maintain a consistent gauge. Each size hook comes in a different color for easy identification.Details:Includes assorted sizes5 hooksAluminum and plasticContents:US size G-6 (4 mm)Us size H-8 (5 mm)US size I-9 (5.5 mm)US size J-10 (6 mm)US size K-10.5 (6.5mm)