Interchangeable circular knitting needles, 13 sizes, 16inch(40cm)-20inch(60cm)-32inch(80cm)-40inch(100cm)-4 different lengths, 52 combinations, suitable for various knitting projects. Knitting needle set with storage bag/case, featuring an extremely high level of appearance and quality, allowing you to easily win praise at knitting parties. Knitting needles, solid wood, dyed, lightweight, non-fading, ergonomic design, no fatigue after long-term use, very friendly for arthritis patients.