The product is a set of 6 fuel filters designed for Detroit Diesel engines used in Freightliner trucks, specifically the DD13, DD16, and DD15 models. Manufactured by KOFIL in China, these filters are identified by the OE/OEM Part Number PF9908 and the Manufacturer Part Number PF9908. The filters are designed for easy installation, making them a convenient and practical choice for maintaining the fuel system in these specific truck models.