The product is a set of vintage 4 ACDelco R45TS8 spark plugs that are new old stock (NOS) and come in an open package. The spark plugs are designed for use in ignition systems and are manufactured by ACDelco. These specific spark plugs have a manufacturer part number of R45TS8. The vintage nature of the spark plugs adds a unique and collectible aspect to them, making them ideal for classic car enthusiasts or individuals looking to maintain the authenticity of their vehicle's parts.