Knit Picks Options Interchangeable Knitting Needles:
Specifically designed to be used with the Interchangeable SHORT Tips, these cables have a smooth, long-threaded join so your stitches glide seamlessly around your knitting needles and your tips stay securely in place.  The flexible cable has very little memory so you can start knitting immediately, and the included cable caps keep your stitches safe while your needle tips are needed 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.  Cables come in emerald Green (coordinates with Caspian tips), or classic Black (a perfect pairing with Radiant tips).

Includes one 16" cable, 2 end caps and one cable key, for use with Interchangeable Needle SHORT Tips (not included). 
Note: Length of interchangeable cables refers to the total length achieved when the needles tips are attached.