Knit Picks Options Interchangeable Rainbow Wood Circular Knitting Needle Set Includes 9 pairs of 4-3/4 long needle tips in US Sizes: 4  11 (3.5mm  8mm) Included accessories: 4 purple cables (2 each in 24" and 32" lengths), 8 purple end caps and 2 cable keys 9" x 5.5" vinyl case with snap shut closure stores all included needles, cables, and accessories Rainbow needles show off waves of color from all across the spectrum for the most colorful version of Knit Picks Options strong and smooth layers of laminated birch Flexible memory-free cables move with stitches and connect easily to tips for snag-free knitting. Be sure to use included cable keys to secure tips to cables and ensure a tight fit.