Durable high quality plastic and metal material ensures durability and longevity. Designed for both indoor and outdoor use.Connect directly to your 12-volt battery to power your favorite 12-volt devices, like tire inflators, coolers, heated blankets, inverters and more.Connect to any 12-volt battery by directly connecting the battery clamps to the battery posts for continuous power for your 12-volt devices.Made from a high-conductivity, 16-gauge, copper wire for maximum performance and a rated capacity of 15-amperes.