Monel Staples from Salco. Made in USA and Europe.
Typically stainless steel staples are corrosion-resistant for extended periods of time, but not completely rust-proof in all circumstances as there is a small percentage of iron in the steel wire alloy. Monel wire staples are indefinitely rust-proof as there is a high nickel content in the wire. They also are immune to galvanic action which can cause corrosion when stainless steel staples are in contact with other metals, such as screening.