This is very handy 40-way male to female, 20 cm length of rainbow jumper wires. You will need it for making wire harnesses or jumpering between headers on PCB’s. These premium jumper wires are a little over 7.5″ (20cm) long and come in a ‘strip’ of 40 (4 pieces of each of ten colors). They have 0.1″(100 mil) sockets on either end and fit cleanly next to each other on standard-pitch 0.1″ (2.54mm) header. You can always pull the ribbon wires off to make individual jumpers, or keep them together to make neatly organized wire harnesses.
Note: The length of the jumper wires is sometimes a bit longer than what is listed.
For best results, when plugging these in a line, have the sides with the ‘silver latch bit’ sticking out since that side is a tiny bit wider than 0.1″