Features: 14 size wire lengths: 2mm, 5mm, 7mm, 10mm, 12mm, 15mm, 17mm, 20 mm, 22mm, 25mm, 50mm, 75mm, 100mm, 125mm, 40pcs for each length, total 560pcs which can meet all your needs. This breadboard jumper cable is make of coppers coated aluminum materials with high conductivity and corrosion resistance, perfect for long terms use. Each breadboard plug in cable have stripped ends and preformed right angles cables that can be easily inserted into your plug-in board. Different lengths and different colour to distinguish different cables. Comes with a plastic box that allows you to keep the jumper cables neat and avoid leaks so you can easily find them next time. Great for use with boards, prototypes circuits, LED strips and test circuits, lab boards or wherever bridging wire are need. Specifications: Materials: plastic and coppers Wire length: 2/5/7/10/12/15/17/20/22/25/50/75/100/125mm Package Includes: 560Pcs Jumper Wire (40pcs of each length) note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.