This is a 4 pack of wires that are pre-terminated with an alligator clip on one end and a hookup pigtail on the other. Alligator clips are a staple part for any workbench and with these cables you will be able to easily incorporate those clips into a breadboard, development platform, or anything else that you would normally be able to attach a hookup wire to.
Each Alligator Clip with Pigtail cable has a wire length of 30cm (that's a little less than 1ft) and a male pin that easily inserts into a standard 0.1" connector. Each pack consists of two red cables and two black cables.