Perfect for replacing or adding up! Comes with rust-resistant paper so the hooks are rust-resistant. Rust proof hook folder stock zip Set of 5 stop-zips with rust-proof paper and 10 anti-rust sheets. Rust-proof Paper Mechanism: Rust proof paper contains a vaporization of the rustproof material, and it can be adsorbed to the rust factor in the hook folder to prevent rust. So it works well even if the rust proof paper and hooks are not directly touched.