This vibrant rainbow-coloured interchangeable circular needle set is made of a strong, polished, smooth laminated birch wood. Yarn slides freely along the needle without catching, but has enough grip to easily manage slippery yarns. The Short Options Interchangeable Needle Set is designed with shorter needle tips that connect snag-free to our distinctive emerald cable. This set includes two 16″ cables that attach simply to the needle tips to createa circular needle perfect for hats, sleeves, and other more compact projects. Tip sizes are US 4through 10 (3.5 mm, 3.75 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, and 6 mm).