The product is a set of 6 NGK spark plugs with the OE/OEM part number C9E, specifically designed for Kawasaki ZX Ninja motorcycles. The manufacturer part number is 7499. NGK is a well-known brand in the automotive industry, known for producing high-quality spark plugs that are essential for the ignition system of the motorcycle. This spark plug set is designed to provide reliable ignition and optimal performance for Kawasaki ZX Ninja motorcycles, ensuring smooth operation and efficient combustion of fuel.