UCEC Breadboard Jumper Wires Ribbon Cables Kit -Include Female to Male & Female to Female & Male to Male 1. Including: 3 * 40pin Female to Female(10cm, 20cm, 30cm)+3 * 40pin Female to Male(10cm, 20cm, 30cm)+3 * 40pin Male to Male(10cm, 20cm, 30cm) Breadboard Jumper Wires 2.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 3. The cables can be separated to form an assembly consist of the how many wires you require for your connection and to support non-standard odd-spaced headers. 4. Made of high-grade copper wire material for safety and durable to use. 5. 100% Brand New and High Quality. Buy with confidence.