Review on 🔧 XIONLAB 2-in-1 Rust Converter & Metal Primer - Covers 4X More, Industrial Grade, Water Based UV Resistant Rust Reformer - No Top Coat Needed - Rust Inhibitor for Damp Surfaces - 1 Gallon by Draven Invert

This stuff worked great. I bought a 16' x 76' wide cargo trailer from a retired landscaper. tandem axle. He dried the hard stone and quickly. I drilled it to install multiple lights after it dries and it won't crack or peel. This really works best on metal with some surface rust, so don't sand on bare metal. Remove scale and leave rest for best results. It took just under a gallon to make the frame of a 16 foot trailer. Creates an excellent base for painting