There are many times when the use of a good rust remover is called for during the bluing operation - old time guns too fragile to polish - guns that have been badly neglected and are not worth spending enough money on to warrant a good polishing job - and guns so badly rusted it would take too much valuable time trying to buff off all the rust and crud on the metal. Our Rust Remover comes in concentrated form. One quart is mixed with one quart of pure water to make two quarts of operating rust remover. The remover is made so it will not attack anything but rusted steel, not the live steel itself, providing immersion is not unreasonably long - several hours, that is. Rust and old blue will be completely removed, leaving nothing but clean steel, ready for polishing. SPECS: Available in 1 quart (946ml) or 1 gallon (3.8L). 1 quart makes 2 quarts solution, 1 gallon makes 2 gallons of solution.