Pixnor 3pcs 20cm 40 Pin Male to Male,Male to Female,Female to Female Breadboard Jumper Wires Ribbon Cable 3 pieces of the 40pin breadboard jumper wires in one set will be sold together. Each cable length: about 20cm 8-inch. Include one 40-pin male to female jumper wires, one 40-pin male to male jumper wires, one 40-pin female to female jumper wires. 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.