These jumper cables are exactly what you need to connect common 0.1″ header devices together. Sure you can tape together individual 1×1 header jumpers, but why not do it right? Use with perf-board, breadboards, breakouts, and more. You’ll have a solid cable for quickly connecting any 2.54mm / 0.1″ boards.

Sometimes these connectors are called «Berg» or «Dupont» or «Molex» — they’re quite generic!

These cables are just the right length: 20cm or about 8 inches. Note that they don’t have a latch or key so there’s nothing stopping folks from flipping these around.