INTERCHANGEABLE NEEDLE CABLE: This cable works with the Knit Picks Options Interchangeable Knitting Needle family INCLUDED: Set includes one cable that creates 47" total length when attached to needle tips, 2 end caps and one metal tightening key CABLE SIZING: Note that the 47" sizing refers to the total length achieved when the needle tips are attached to the cable FLEXIBLE CABLE: Memory-free cables move with stitches and connect easily to tips for snag-free knitting EASY TO ASSEMBLE: Use the included metal tightening key to secure needle tips to the cable and ensure a tight fit; end caps are included to screw on cable to keep your knitting safe when your needle tips are required elsewhere The smooth cable join lets your stitches slide around your knitting needles with no snags while the long threaded join ensures that your cables and knitting needle tips stay securely in place. Additionally, the flexible black cable has very little memory so you can start knitting immediately. Simply unscrew the needle tips and screw on the cable caps to keep your knitting safe when your needle tips are required elsewhere. Lace knitters will love that they can tie a piece of scrap yarn through the tiny hole in the cable end (used for the tightening key) and thread a lifeline through their lacework at regular intervals while they are knitting.