Knitter's Pride Zing Needles are made from superior grade light weight aluminum that is warm to the touch and gentle on the hands. Perfect points are flawlessly tapered. A smooth joint ensures easy stitch glide and no snagging. Flexible cords lay flat with no kink or twist. Each size features it's own radiant color for easy identification. 16 in. Special Interchangeable Circular Set- Contains: 7 knitting tips in sizes 4 through 10, 2 cords to make 16 in. needles, 4 end caps, and 2 cord keys. Includes 2 tips in each size and 2 cords that each assemble to 32" circular needles. Metric tip sizes range from 3.5-6 mm. Red and Blue zippered clutch with clear acetate window and see through pouch keeps both needles and accessories organized and secure.