Breadboarding is an efficient way of testing a circuit but is a futile endeavour without the use of either cut cable, jumper cable, or most easily, pre-cut header cables like this. That’s where this pack of ribbon cable comes into play. With this male to male jumper wire pack, you can either connect 40 pins wherever they need to go or tear off as many as you need, right down to the single cables. They’re all colour coded too. This makes tracing your circuits a lot easier than just using random lengths of generic wire, or trying to fit resistors into strategic positions. A must-have for any Arduino aficionado.