HiyaHiya interchangeable cables are accessories for HiyaHiya's interchangeable knitting needle system. They work with both the steel tips and the bamboo tips. Made of the same, soft plastic that HiyaHiya fixed circulars are, these cables feature swiveling ends so your needles won't unscrew themselves and a lifeline hole to make placing lifelines a snap. Be sure to purchase the correct size cables. Sock Cables are for needle sizes US 0-1.5 (2mm-2.5mm). Small cables are for needle sizes US 2-8 (2.75mm-5mm), and large cables are for needle sizes US 9-15 (5.5mm-10mm). Cable length reflects the total needle length tip to tip when combined with interchangeable tips. The first size is the length if you are using the shorter, 4" tips; the second size is the length if you are using the longer, 5" tips.