Hailege 20pcs Alligator Clips Wires Alligator Test Leads Length 20.5 inch for Circuit Connection Electronic Testing Experiments Electronics DIY Two Bundles Five Colors

For something like an arduino board, Raspberry PI they work very well. The insulated covers over the alligator clips are a nice touch especially when using on a small/cramped prototype board/solderless breadboard.

They are great for testing equipment that requires less that 2 or so amps to run as they are not heavy enough to use for higher current.

The clips are small enough to hook on smaller wires and grip well, and the insulation comes nearly all the way to the tip so you don’t cause any shorts.

The wires are flexible, so the clips don’t pop off while you’re working on something.

You can get two of each color: red, black, yellow, green, and white. The different colors are handy for keeping track of which wire is which when you’re testing multiple things at the same time.