Named after the Norwegian word for happiness, Lykke Crafts combine high quality materials and thoughtful design to produce beautiful, durable, happy-making knitting needles and crochet hooks. They have quickly become a favorite among our customers for their durability and great price. These extra cords are compatible with the 3.5" Interchangeable Set and come in a 16", 20" and 24" length. Each cord comes with a key and two stoppers. Corresponding extra needle tips are also available.