These prototypes cable arrived after a delay of about one week, all in a very good condition. Nothing to report the side of the operation of son, you have different lengths and colors allowing them to easily find, they fitted perfectly into my breadboard and despite the fact that they can twist easily, it is a kind of flexibility which sometimes allows for more "exotic" bonds. I recommend for someone just to get a breadboard or like me who does not want to strip the son a long time.