Saliency 120 pcs Breadboard Jumper Wires Ribbon Cables Kit 40-pin 20cm Male to Male / Female to Female / Male to Female Total 120pcs=40pin Male to Male+40pin Female to Female+40pin Male to Female. Each cable length: about 20cm /8-inch. Made of high-grade copper wire material for safe and durable to use. Be used for electronic project and Genuine Arduino product. The cables can be separated to form an assembly containing the number of wires you require for your connection and to support non-standard odd-spaced headers.