The product is a set of four genuine authentic DENSO Iridium TT spark plugs, model number IKH20TT. These spark plugs are designed to enhance the ignition system of a vehicle, providing improved performance and efficiency. With the trusted brand of DENSO, users can be confident in the quality and reliability of these spark plugs for their car or truck. The 4 pack bundle ensures that users have an ample supply of spark plugs on hand for any maintenance or repairs needed in the future.