Description Boeshield Rust Free is a rust & stain remover that can also be used as a protectant. And it’s made by the Boeing Company…that’s right, the one’s who build planes. Quickly Remove Rust & Stains with Rust Free. Removes rust from any surface: Steel Cast Iron Stainless Steel Fiberglass Chrome Tile Porcelain Concrete Vinyl Cloth Spray on Rust Free and allow to penetrate for no more than 30-60 seconds, then wipe with a dry cloth. For heavy rust on metal surfaces scrub with a Scotchbrite pad. After use, wash area with a mixture of soap and water. CAUTION: Rust Free is acidic and can cause dulling on polished surfaces. Always test in small area first. Boeshield Rust Free Specs Great for corrosion on bike frames, wheels & components Great for non-bike applications too like hinges, taps, bolts, nails, car bodies, locks, fences, letter boxes, car trailers, caravans, staples… Available in 8 fluid ounce (236ml) & 4 fluid ounce (118ml) spray bottles Can I use Boeshield T-9 aerosol on a bicycle chain? Yes. We do offer a drip bottle of Boeshield T-9 specifically labeled for bicycles; However it contains the same formula as the Boeshield T-9 aerosol. Is Boeshield T-9 Aerosol the same product as Boeshield T-9 Bike and Drip bottles. Yes, both contain the exact same formula.