Wangdd 4 Pin 20cm Jumper Wire Cables DuPont Line for Arduino breadboard Female to Female Each cable length: about 20cm /8-inch. Dupont wire is most suitable attachment for the SMC experiment. The dupont line can be used as the connection between the various modules as well. Can be used for PCB project. 4pin (2.54mm) to 4pin (2.54mm) header