This high-performance 12V 40A automotive relay set comes with 5 units and matching sockets, perfect for demanding vehicle electrical applications. Each relay features durable black and red copper terminals that ensure excellent conductivity and long-term reliability. The waterproof, sealed construction protects internal components from moisture, dust, and other environmental factors, making these relays ideal for engine bay installation. With a robust 40-amp current capacity, these relays can handle heavy-duty automotive circuits including lighting systems, power windows, and other vehicle accessories. The included relay sockets provide quick, secure installation and maintenance. Compatible with standard 12V DC vehicle electrical systems, these general-purpose relays offer versatile application options. The compact design and sturdy construction make them suitable for both OEM replacement and custom automotive projects. Each relay features clear terminal markings and a built-in mounting tab for proper orientation and secure fitment.