This kit is the most complete breadboard jumper set, including a variety of high-quality U-shaped jumpers, a variety of solderless flexible jumpers, which can be used for various circuit experiments. Easy to distinguish: different colors of jumpers, easy to distinguish, reusable Easy to use: All color jumpers are pre-stripped and pre-formed into right angles, easy to insert into the breadboard, 14 different lengths of jumpers to meet your basic needs, good ductility, good elasticity, easy to operate. Length of jumper: (2mm 5mm 7mm 10mm 12mm 15mm 17mm 20mm 22mm 25mm 50mm 75mm 100mm 125mm) Wide application: It suitable for any breadboard or any place where a jumper is needed, perfect for breadboard projects.