AWELTEC UL-Listed Jumper Cables - 8 Gauge 12 Feet Automotive battery jumper cables for jump starting a dead or weak battery. High density copper clad aluminium make it has excellent conductivity. 12 Foot length makes it easy to reach from one car battery to another, Unique Design clamps suitable for various cars and connection ways. Every AWELTEC jumper cables passed the strict working temperature test which accommodated to meet and even exceed the UL 1839 standards, it works well in the extreme environment. (-40F/-40C to 140F/60C). Industrial polypropylene made cover protects jaws from impacts (Unique Design), Also patented design clamps covered with non-conducting rubber, which make AWELTEC jumper cables more safe and durable for repeatedly use.