TEKTON DELUXE PAINT SPRAY GUN features: Heavy Duty Construction, Adjustable Spray Pattern Control, Dual Action Trigger, Anti-Drip, 1-Liter Polished Cast Aluminum Siphon Cup with Quick-Release Cover, External Mix, Siphon Feed Gun, Forged Air Cap and Spray Head, Precision-Machined Brass Nozzle Provides a Constant, Uniform Finish Every Time, Cup Capacity: 1-Liter, Fluid Inlet: 3/8", Minimum Compressor: 1-1/2 HP, Working Air Pressure: 50-70 psi, Average Air Consumption: 8.5-12 CFM, Air Inlet: 1/4".