The Preval Spray Gun The Preval Spray Gun is a versatile sprayer for all types of liquids. Attach this power unit to the refillable jar (sold separately), and spray up to 16 oz of liquid, depending on viscosity. The power units are disposable and can be easily replaced. You can change jars for different uses! Fill a jar with your favorite cleaning solution. It makes washing windows, fixtures and other surfaces virtually effortless. Dedicate another Preval jar to touch-up painting jobs. You'll get perfect color matching every time, because Preval lets you mix and use your own paint. You can spray oils and lubricants too. Each container jar has a sealable cap to preserve the contents. There are hundreds of ways you'll save time, effort and money with the Preval Spray Gun. From around the house to in the workplace, it's got to be the most valuable tool in your toolbox. With thousands of uses within Industry. Preval does it all. The container and sprayer power unit are sold separately. This product is for the Preval Sprayer Power Unit only.