Veewon 3pcs Set Flexible 30cm Multicolored 40 Pin Male to Male,Male to Female,Female to Female Breadboard Jumper Wires Ribbon Cable (30cm) Material: high-grade copper wire.Cable length:about 20cm. Connectors: 40 Pin connectors. Pin Spacing : 2.54mm,compatible with 2.54mm mil spacing pin headers. Including one 40 pin male to male jumper wires,one 40 pin male to female jumper wires,one 40 pin female to female jumper wires cables.