KA Bamboo Standard Switch Exchangeable Circular Knitting Needle Set 12 Needles 8 Cords Case Dragon Fly The set includes 12 pairs of bamboo needle tips, sizes 2-13, and eight cords to create 64 different knitting needles sizes/lengths. For size 2-3 cord 8",16" for 4-8 cord size 8",16", 21.5" for 9-13 cord size 8",16", 28".