Kalevel&reg; 80pcs Multicolored 40pin Breadboard Jumper Wires Female to Female Ribbon Cables Kit Pack Each cable length: about 20cm /8-inch. Including : 2 * 40-pin Female to Female jumper wires =80pcs in total The male ends meant for insertion into standard 0.1"(2.54mm) female sockets and the female ends are meant for insertion onto standard 0.1"(2.54mm) male headers 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. Made of high-grade copper wire material for safe and durable to use