This is a set of two genuine ACDelco spark plugs with the part number CR43TS. They are made of copper and have a voltage of 12v. The spark plugs have a standard configuration and a brushed, clear coat, and polished finish. They are designed as a direct replacement and have an installation depth of 4. These spark plugs are suitable for gasoline engines and have a manufacturer heat range of 100°C. They come in a bundle of two and are not modified or vintage parts.