This gun is perfect for jobs requiring large overall coverage with medium to heavy viscosity materials. The spray pattern can be adjusted from 3/4" (19mm) to 2" (50.8mm) simply by turning the paint tip. The Model 250 uses 1 oz. jar. FEATURES • Sprays virtually any properly reduced material • Operates on 20 to 50 PSI. (1.4 to 3.5 bar) • Adaptable to compressors, CO2 tanks and aerosol propellant cans.