This is the short, lightweight cable used to connect the receiver to the flight controller in most small drones.  It can also be used in any situation where a cable with a female on both ends is needed.  The connector is the Universal JR/Spectrum type (no tab).  
 
These cables are now available in 4 lengths.  The 2", 4", and 6" lengths are flat 22AWG wire.  The 12" length is twisted 22 AWG wire.  All feature glold-plated connectors.