The Goodall by Vanair 12-502 jumper cable with plug and clamps is 25-feet long providingeasier access for boosting. Made of 2-gauge welding cable this cable featuresa non-reversible plug on one end to ensure proper polarity when plugged intothe mating plug. Clamps on the other end are rated at 500 amps. This set isappropriate for heavy duty boosting. Flexible fine strand copper conductor wire Durable high-grade insulation material resists acid, oil and chemicals 25 foot long Clamps rate at 500 amps Non-reversible plug Made of 2 Gauge