Sport, DK & Worsted
Sport weight is slightly thicker than fingering and slightly thinner than DK. DK stands for double knitting weight. Both sport and DK are great middle of the road weights, perfect for all projects from hats and mittens to baby items and even garments. Worsted is slightly heavier than DK, and also great for a multitude of warmer projects from hats to mittens to garments and blankets.
Sport and DK is most commonly used with size US 5-7 (3.75-4.5 mm) knitting needles or a size 7 to I9 (4.5-5.5 mm) crochet hook. Worsted would require slightly larger needles or hook, depending on the gauge desired.