ChiaoGoo TWIST Blue Small Flexi Cables [S]

From the ChiaoGoo website:

TWIST Blue X-Flex interchangeable cables.  It’s the same type of cable as our red TWIST cables just MORE flexible!  Need a little extra cable length for a current project? Add this to your cable with one of our connectors.  Or, use this with our 2″ Shorties interchangeable tips.