From HiyaHiya, these interchangeable swivel cables can be mixed and matched with 4" or 5" HiyaHiya Interchangeable Knitting Needles (sold separately). Simply screw onto the desired needle for a seamless, customized circular knitting needle. Packages includes (1) swivel cable that corresponds with the Hiya Hiya Interchangeable Needles (Large Set). Sizes 24" to 60" available.