The Autolite 26 Double Copper Resistor Spark Plugs 8 Pack Vintage NOS 804 is a set of standard spark plugs designed for gasoline engines. These spark plugs are made in the United States by Autolite and are suitable for vehicles requiring 12V spark plugs. The double copper resistor design provides improved performance and durability, making them a reliable choice for car and truck owners looking to maintain their ignition systems.