This 40" (102cm) Interchangeable Cord by Knitter's Pride is for use with their set of Dreamz Chunky Interchangeable Needles, listed here. This thin, flexible cord length is popular for large projects with a lot of stitches, or for magic loop. The Knitter's Pride Interchangeable needle sets have a smooth join for snag-free knitting! Included with the cord are end stoppers and a cord key.