The product is a service manual for the Detroit Diesel Series 60 engine, specifically designed for heavy-duty applications. This manual includes detailed information on sections 1-2, providing essential guidance for maintenance and repair. The manual is produced by Detroit Diesel, a reputable brand known for high-quality heavy-duty engines, and is made in the United States. It is a valuable resource for operators and mechanics seeking to properly care for and troubleshoot these powerful engines in heavy equipment applications.