The Snap On Tools Wrench ST1136A is a specialty hand tool designed specifically for Cummins Diesel engines. Made by the reputable brand Snap-on, this 3/4 inch wrench is a single item and utilizes the SAE system of measurement. With its high-quality construction and precise sizing, this tool is a valuable addition to any automotive tool collection. Ideal for professionals and enthusiasts alike, this USA-made wrench ensures reliable performance and durability.