Unlike most other aerosol paints, each Preval Power Unit uses just 1.97oz. of eco-friendly propellant to spray up to 16oz. of liquid. What's more, each versatile Preval unit can be used with different formulas for different projects. Ideal for in-the field touch-ups, every Preval Power Unit secures to a recyclable glass bottle and atomizes virtually any colour-matched paint, formula or solution with consistent results.