The product is an NGK Ruthenium HX Spark Plug with the part number 90495 and interchange part number LTR6BHX. It is designed for use in ignition systems of cars and trucks, specifically for improving engine performance and efficiency. The spark plug is a crucial component that generates the spark necessary to ignite the air-fuel mixture in the engine cylinders. NGK is a reputable brand known for producing high-quality spark plugs, and this particular model is part of their Ruthenium HX series, which offers enhanced durability and longevity compared to traditional spark plugs.