The product is a 4 pc NGK 5329 DPR9EA-9 Standard Spark Plugs for X27EPR-U9 RAX92YC GA. These spark plugs are genuine NGK brand with a standard configuration, designed for direct replacement with a heavy-duty direct fit OEM replacement surface finish. They are compatible with various vehicle models and brands, such as Yamaha, Suzuki, Honda, and Kawasaki, among others. This pack includes 4 spark plugs and comes with a free core charge, making it a convenient and reliable choice for maintaining the ignition system of your vehicle.