These Interchangeable Circular Knitting Needle Cables from KnitPro lay flat with no kink or twist, and are therefore easy to store. The smooth joins enable the stitches to slide around the needles effortlessly. The long threaded screw-in join ensures the cables and needles stay connected, with a tightening hole provided in the metal join for extra secure tightening. The specially designed key facilitates effortless tightening. The end caps fit easily onto the cable and keeps your knitting safe.