Lykke Interchangeable Colored Cables are resilient, flexible cords that lay flat, with no kink or twist – easy to store. They have a smooth join, enabling stitches to slide around needles effortlessly. A long, threaded screw-in “join” insures that cord and needles stay connected. There's a tightening hole in the metal join for extra secure tightening, to be used with a specially designed “key” that facilitates effortless tightening. Each cord includes a tightening key and two end caps. These cords also work with Knit Pro tips. The measurements below are based on using a 3.5" tip. (They are certainly usable with 5" tips but the measurements will be different from stated here)

Lykke Interchangeable Cords for 5" Tips

Knit Pro Interchangeable Cords