A MatchBox Mayhem Box Including a 170pin breadboard, 5 leds, 5 resistors, 1 tactile button, 1 40pin header, 4 rubber feet, 5 m-f wires, 3 m-m wires, 2 f-f wires and a capacitor. This kit includes the basics and more for use with Arduino, Raspberry Pi and more development boards.