Knitter's Pride-Interchangeable Cords. Cords have a smooth join which enables stitches to slide around needles effortlessly. The specially designed key facilitates effortless tightening. End caps easily fit on the cord and keeps knitting safe. Cords are flexible and lay flat with no kink or twist, making them easy to store. This package contains one cord, two end caps and one cord key. Each cord is sold separately. For use with any Knitter's Pride brand interchangeable needle. Imported.