This multi-cable is designed specially for Raspberry Pi. This cable which both ends are female is used to take out Raspberry Pi's GPIO pins out. Cable has 2x20 pin structure and it is compatible with 3/2/B+/A+. You can review 26 packed GPIO Cabl for the 2x13 pin stucture cable that is compatible with Model B.
You can establish a connection between your own circuit and Raspberry Pi with using the cable or you can use jumper cables for making connection on the board. You can use T Type GPIO Board or I Type GPIO Board for connecting it onto breadboard in a practical way.
The lenght of the cable is 20 cm.