Corrosion Block is a state-of-the-art, anti-corrosion/lubricant compound that has been specifically designed for marine use. It is a clean, clear, ultra-thin fluid compound which leaves a non-greasy atmospheric barrier to protect metals. Because it leaves no gummy residue to trap moisture, lint, or dirt, Corrosion Block is perfect for protecting electrical systems, electronics, fishing tackle, and other gear aboard your boat from saltwater, moisture, corrosion, and rust.