The product is a lot of 7 vintage Champion RF-10 spark plugs, made in the United States. These spark plugs are new old stock (NOS) and are designed for gasoline engines. With a voltage of 12V and copper material, these spark plugs are ideal for classic cars and vintage vehicles that require reliable ignition systems. Champion is a well-known brand in the automotive industry, known for producing high-quality replacement parts for ignition systems.