20cm Dupont ribbon wire sets for educational use.

These are likely the wire sets you want if you are going to be using them over and over again. Each set has (1) M-M, (1) M-F and (1) F-F 20 cm ribbon. Each ribbon has 40 wires in 4 groups of 10 colors. They are nice and flexible with good quality Dupont ends. I definite notch up.