Exrust – Liquid – 16oz BottleExrust penetrates and chemically reacts with rust to quickly remove it from all surfaces. Effective on all ferrous metals without harming the base steel or iron*.*Do not use on non-ferrous metals.Industrial Strength Rust RemoverExrust penetrates and chemically reacts with rust to quickly remove it from all surfaces. Effective on all ferrous metals without harming the base steel or iron*. After treatment, any type of finish can be applied. 50-State VOC Compliant.*Do not use on non-ferrous metals. **Additional Hazmat shipping charges. This product cannot be sold or shipped to California.Features:Powerful – Penetrates and chemically reacts with rustFast – Quickly removes rust from all surfacesVersatile – Quickly removes rust from all surfaces