They're like little 15cm (6") high-quality extension cables for your breadboard. Actually, they ARE little 15cm high-quality extension cables for your breadboard!
It's not often you'll need these, but when you do, they'll make your experimentation much easier!
Measuring 155mm (6") long, this 10-pack of multicolored jumper wires will save your butt during your breadboard experiments. Comes as 1 package of ten jumpers (colors shown).