These are well-made and manufactured in USA!!  There is not much to say about jumper cables, but some of the ones you see at automotive parts stores are pretty flimsy and the conductors look like they are significantly smaller than the gauge marked on the packages.  These 6-gauge are suitable for cars with medium size batteries such as compacts or older models.  For a new sophisticated car with lots of electronics and a big battery (BMW, Lexus, Mercedes, etc.), I suggest 4-gauge cables instead.