The product is a set of 4 NGK Iridium IX spark plugs, model 6510 LTR7IX-11. These high-quality spark plugs are designed to provide reliable ignition performance in cars and trucks. With a California Prop 65 Warning, these spark plugs are a great choice for drivers looking for a top-of-the-line ignition system component. The NGK brand is well-known for its durable and spark-efficient plugs, making these spark plugs a solid choice for any vehicle.