Howes Care Master Aerosol can comes in a 12 ounce can and is used by many national fleets, including the U.S. Postal Service and Ryder trucks, as well as thousands of smaller businesses from automotive repair shops to farms and marinas nationwide. It dissolves rust, sludge and gunk while displacing water, yet it is safe to use on almost any surface because there are no harmful alcohols or solvents. Great for automotive, household, sports equipment and home shop use. Call us if you are seeking 10+ cases.