Terms of the Trade: What Is a Crescent Wrench? Terms of the Trade: What Is a Crescent Wrench?
A crescent wrench is an adjustable wrench that can take the place of many others in your collection. The sliding jaw changes the width of the wrench, enabling you to use it on different sizes of nuts and bolts. The term "crescent" is colloquial, referring to the brand that made this tool widespread.