Features: Heavy Duty, Made in the USA 4, 2 or 1/0 AWG alligator clamp jumper cables for jump starting a dead or weak battery. Same great UL listed cable found in other Spartan Power inverter battery cable sets. DOUBLE YOUR POWER! Spartan Power?s unique heavy duty clamps have a copper ribbon which connect each sides of the clamp so BOTH jaws provide power to the battery when starting. Ideal for starting or to jump start a large diesel truck, heavy duty fleet equipment, cars & semi trucks, etc. The best jumper cables for cold weather and harsh environments. Comes with a bright portable yellow storage bag with drawstrings and roadside emergency reflective safety stripe. Storage pack doubles as a convenient backpack. 100% pure copper cable sets come with adhesive lined irradiated polyolefin (PO) heat shrink which is exceptionally resistant to water fungus and UV light. All Spartan Power automotive battery cables come with their Lifetime Crimp Warranty. If you ever experience a crimp failure Spartan Power will replace or fix the cables for the life of the product. MADE IN THE USA, BUY AMERICAN!Cable Features: Made in the USA Polyvinyl-chloride (PVC) insulation 90?C MTW - UL & CSA 105?C Voltage rating: Up to 1000 volts UL 10269 VW-1 & moisture resistant ROHS Compliant UL 1232/1284/1338/10269 Approved