Shield your 4x4, trailer, or marine vessel from salt, sand, and mud with Salt Shift Rust Shield. This high-gloss, hydrophobic coating creates a durable, non-stick barrier against corrosion. Perfect for beach driving, coastal living, and off-road adventures. Each bottle is 500ml / 16.9 fl oz. Features: - DIY protection - Cures & hardens in 2-4 days - Gloss finish - Corrosion protection (last up to 12 months) - Non-stick & hydrophobic - Australian made One 500ml bottle covers two full vehicles. Stay protected, stay on the move. Specifications: Rust Shield can last anywhere from 6 - 12 months depending on how often you use your car off-road. We suggest checking before each trip to ensure you're protected.How to check: Rust Shield leaves a hydrophobic barrier on your vehicles chassis. Once the hydrophobic properties start to fail It's time to reapply.Pro Tip: If your Chassis doesn't rinse clean with a quick wash. Your Rust Shield coating may need topping up.If you are a passionate off-roader or beach goer - you may need to reapply Rust Shield several times per year to ensure you stay protected. How to Use: Step 1: Pressure wash the appointed areas of your vehicle or trailer, best used with Salt Shifts All Purpose Cleaner.Step 2: Allow to dry free of water residueStep 3: Spray Salt Shift Rust Shield onStep 4: Allow 3 hours to tack dry before any normal tarmac driving, then allow 3-4 days to cure and harden before any trail/beach driving, vessel launching or commuting on wet roads. Ensure to check if it has cured to a non-stick touch test prior to going off-road.WEAR RESPIRATOR AND SAFETY GLASSES WHEN APPLYING.ENSURE RUST SHIELD HAS FULLY CURED BEFORE GOING OFF ROAD (TOUCH TEST).DO NOT APPLY TO EXHAUSTS OR ENGINES.