MDW 240 Pcs Multicolored Breadboard Jumper Wires Ribbon Cables Kit (Multicolored) Each cable is approx 8 inches (20 cm) long. High quality copper wire material, safe and durable to use. Include 2*40-pin M-F jumper wires + 2 *40-pin M-M cable + 2* 40-pin F-F cable =240pcs in total. They are easy to separate if you dont need the full 40 pins.