Heavy Duty T-50 Staples 9/16 Inch Length 1462-Count 3/8″ Crown | (672 Stainless

Made of Galvanized steel and SS304: The T50 staples are made of the great galvanized steel and 304 stainless steel, strong rust & corrosion resistance, sturdy and not easy to break, with good toughness and tensile strength, which are smooth and bright on the surface with no nail jamming.