These female-female jumper wires are handy for making wire harnesses or jumpering between headers on PCB’s. These premium jumper wires are 6″ (150mm) long and come in a ‘strip’ of 20 (2 pieces of each of ten rainbow colors). They have 0.1″ female header contacts on either end and fit cleanly next to each other on standard-pitch 0.1″ (2.54mm) header. The best part is they come in a 20-pin ribbon cable. You can always pull the ribbon wires off to make individual jumpers, or keep them together to make neatly organized wire harnesses.