KnitPro Interchangeable Needle Cord | Cable with End Caps and Key KnitPro Interchangeable Cords let you create the circular needle length you need by connecting them to compatible KnitPro needle tips. The flexible cable lies flat while you work, and the included end caps allow it to double as a stitch holder when your needle tips are needed elsewhere. Best For: Interchangeable needles • Knitting in the round • Large projects • Holding live stitches • Custom needle lengths Material: Flexible nylon cable with metal connectorsCompatibility: Fits standard KnitPro interchangeable needle tips and Tunisian crochet hooksLengths: Select from available optionsIncludes: One cord, two end caps, and one cable keyNote: Listed length is the finished circular needle length when tips are attached