These jumper wires are designed for 2,54 mm standard pins. This package contains 4 jumper wires of each of 10 different colors, so it has 40 jumper wires in total. These 26 awg connection wires are 30 cm long. One side is male, the other is female.
You can use them in breadboard applications and also you can use them with Arduino, Raspberryor pcDuino.