These jumper wires are handy for making wire harnesses or jumping between headers on PCB’s. These premium jumper wires range from 3″ to 12″ long and come in ‘strips’ of 20 (2 pieces of each of ten rainbow colors). They have 0.1″ header contacts on either end and fit clearly next to each other on standard-pitch 0.1″ (2.54mm) headers. The best part is they come in a 20-pin ribbon cables. You can always pull the ribbon wires off to make individual jumpers, or keep them together to make neatly organized wire harnesses.