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This professional grade sprayer is a must for every fiberglass, composite and cultured marble shop. This gun is used for spraying not only gelcoat and resins, but other materials such as parting films, spray gypsum, tooling gelcoats, sand able primers, granite enhanced gelcoats, adhesives and paints. With our largest nozzle, it will even sand blast. The easy to clean design means clean up times less than five minutes. Wipe the lid and nozzle, through away the cup, and you're ready to go again. We have also designed the gun to work with standard paper cups.