The product is a set of 4 Genuine Motorcraft Iridium Spark Plugs, specifically the SP550X model with interchange part number CYFS12YPCT. These spark plugs are designed for gasoline engines and are made with iridium material for enhanced performance. Manufactured in Japan, these spark plugs are standard configuration and weigh approximately 0.5 lbs. Upgrade your ignition system with these high-quality Motorcraft spark plugs to ensure optimal fuel efficiency and reliable engine performance.