Knitter's Pride Interchangeable Needle Cords feature resilient, flexible cords that lay flat, without kinking or twisting. The long threaded screw-in join ensures that cord and needles stay connected while the smooth connection enables stitches to slide around needles effortlessly. Tightening hole and specially designed key facilitates effortless tightening. Optional end caps easily fit on cord and keeps your knitting safe. Black/Gold 16"- When used with Knitter's Pride 4" tips, sold separately, you create your own 16" circular knitting needles. Features black cord, gold ferrule, 2 black end caps, and a specially designed tightening key. Designed to be used with bamboo needles.