The product is a lot of four hardcover books titled “Structural Steel Detail Construction & Stress Design” published by the American Institute of Steel Construction (AISC) in 1966. The books cover the subject area of construction and design, with a focus on structural steel detailing. Authored by AISC, the books are written in English and provide in-depth information on various aspects of steel construction and stress design. Perfect for students, professionals, and anyone interested in the field of structural steel detailing, these books offer a comprehensive resource for understanding design principles and techniques.