Buying acetone by the 5-gallon can makes sense once you go through more than a couple of quarts a season. Klean Strip's Acetone Solvent is a straight, unconcentrated solvent built for thinning and cleaning fiberglass resins - a job that eats through smaller containers fast if you're working on boat repair, auto body fiberglass, gel coat, or shop cleanup. Because it's rated for indoor and outdoor use, you can run it in the shop or take it outside for bigger jobs, as long as you're keeping ventilation and fire safety in mind - this is a flammable liquid, so store and handle it accordingly.The bulk can size cuts down on trips back to the store mid-project and gives you enough on hand for cleaning tools, brushes, and equipment between resin batches, not just thinning the resin itself. Solvent Type: Acetone, unconcentrated liquid Container Size: 5 gallons in a metal can Primary Use: Thinning and cleaning fiberglass resins Rated for indoor and outdoor use Flammable - handle and store with proper ventilation Made in the USA by Klean Strip