Smraza Breadboard Jumper Wires 195pcs,Male to Male for Arduino Breadboard and Circuit Board Male to male and Material - pure copper wire,PVC,Good conductivity. All different size in one set. 4 Different lengthes wire: 4.72 inch(120mm)-147pcs,6.29 inch(160mm)-24pcs,7.87 inch(200mm)-12pcs,9.84 inch (250mm)-12pcs. Breadboard jumper wire 65pcs pack, total 3 sets and 195 pcs. The head of the cables is stronger, is not easy to fall off and damage.Jump Wires are flexible, durable, reusable, easy to trace, easy to connect and disconnect Free combination for your Arduino project.