Armstrong Industrial Hand Tools have a heritage of Made in the USA since four brothers founded the company in 1890. This Armstrong brand punch/chisel is created from premium material ensuring unequalled strength, toughness, and durability.Product Name : Center Punches; Point Diameter (Inch ); Stock Size (Inch ) : 5/16; Overall Length (Inch ) : 4.500; US Federal Specification (Inch ); ASME Specification (Inch ); Material (Inch ) : Alloy Steel; Finish (Inch ) : Black Oxide.