KA Bamboo Exchangeable Circular Knitting Needle Set Medium Large 10 Needles 8 Cords Case Polka Dot The set includes 10 pairs of bamboo needle tips, sizes 5-15, and eight cords to create 39 different knitting needles sizes/lengths. For 5-8 needle cord sizes are 8",16",21" For the 9-15 needle cords sizes are 8", 16", 21", 28", 43".