This 40" (102cm) Interchangeable Cord by Knitter's Pride is for use with their set of Dreamz Chunky Interchangeable Needles, listed . 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.