Description of Stanley Proto J721 4S2 16 Inch
Made from S2 steel and specially heat-treated for greater strength and durability. Hand ground cutting edge to the exact angle for cutting through tough metals. Modified parabolic striking end to help reduce mushrooming and chipping. Black oxide finish to help prevent rust corrosion; extending tool life and performance. A polished identification panel on one of the flats is marked with the tool number and size in a black inlay, Made in USA.