The TWIST Red Cables for Interchangeable knitting needle tips work with both the SPIN and TWIST ChiaoGoo tips. Mini sized cable join are available here.
These Cords are designed to be memory free and flexible but supportive
Made from a steel cable coated with red nylon
For Tip sizes US 2-8 use the Small join cables
For Tip sizes US 9-15 use the Large join cables
The 8" cord length can be used with the 4" tips to make a 16" circular needle
Also available here in mini size join for needle sizes US 000-1.5
The cords include a lifeline hole and range in size from 8 inches to 50 inches.
The length listed is the actual length of the cable so if you have 4" tips add 8 inches, and if you have 5" tips add 10 inches, to the cable length to get the total length of the completed circular needle