This is an ORIGINAL Detroit Diesel Series 71 Diesel Engines Service & Repair Manual set (1994 printing, covers ALL models). This manual has super illustrations as well as having in-depth service, repair, and specifications information for these classic DD engines. The binders are in nice shape with NO splits. The books are tight and intact with NO loose or missing pages. This manual set contains several hundred clean pages. Manual set is in FINE+ overall condition (very nice).