How is adjustable spanner made?

An adjustable spanner, also known as an adjustable wrench, is typically made from high-carbon steel or chrome vanadium steel for strength and durability. The manufacturing process begins with forging the steel into the desired shape, followed by machining to create the jaw and handle. Heat treatment is applied to enhance hardness, and the tool is then finished with grinding and polishing. Finally, the adjustable mechanism is assembled, allowing the jaw to move and grip various sizes of nuts and bolts.