Armstrong Industrial Hand Tools have a heritage of Made in the USA since four brothers founded the company in 1890. This Armstrong brand chisel is forged from domestically produced steel ensuring unequalled strength, toughness, and durability. Product Name : Cold Chisels; Width of Cut (Inch ) : 5/16; Stock Size (Inch ) : 5/16; Overall Length (Inch ) : 5.000; US Federal Specification (Inch ); ASME Specification (Inch ); Material (Inch ) : Alloy Steel.