Main pros: -- Most important: wire is silicone material and with the fine wire stranding and silicone insulation remains very flexible even at lower temperatures. This flexibility is the main attraction of this product. -- wire gauge is heavy enough for most applications, although somewhat bulky for small circuits. -- clips clamp on tightly and maintain alignmentThe only minor con is -- the plastic alligator clip cover seems to be of average quality, although certainly functionalMy application for these is temporary use automotive and temporary use for medium power circuits. Flexibility over temperature is important in automotive, as is heavier gauge and resistance to becoming detached from vibration. There are plenty of light gauge jumpers for light circuit work, much less common are heavier useful alligator wire clamps like these.I liked these so much I bought two more sets just in case something happens to the supplier! Words are cheap, all the sellers claim their product is the best, these wire jumpers are good.