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. When used with Knitter’s Pride 4-inch tips, sold separately, you create your own 40-inch circular knitting needles. Features black cord, silver ferrule, two black end caps, and a specially designed tightening key.