KBS Part Number 150080. While the most permanent solution for rust prevention is the KBS 3-step system of KBS Klean, RustBlast and RustSeal, KBS Rust Converter can be used when you are unable to use the KBS 3-Step System.
this stuff is commercial grade. It so far (and that is really short time) has done the job. Get one can more than you think you need and do the job correct with the correct amount of spray. You only get one chance to do it right.