This vintage die tapping wrench is a machinist's tap wrench. With a length of 7 1/2 inches, this adjustable wrench is designed for precise and efficient tapping of holes. As a collectible item in the world of machining tools, this piece is not only functional but also holds historical significance for those who appreciate vintage tools and craftsmanship. Its adjustable design allows for versatility in various machining tasks, making it a valuable addition to any tool collection.