Turbo Rotary Spray Nozzle, Nozzle Size 3.9, Max. Pressure 4,000 psi, Max. Fluid Temp. 194 Degrees F, Inlet 1/4 in (F)NPT, Material Brass/Ceramic/Plastic, Orifice Size 3.9 mm, Nozzle Spray Angle 40 Degrees , GPM @ 800 PSI 1.8 gpm, GPM @ 1000 PSI 1.9 gpm, GPM @ 1500 PSI 2.4 gpm, GPM @ 2000 PSI 2.7 gpm, GPM @ 2500 PSI 3 gpm, GPM @ 3000 PSI 3.3 gpm, GPM @ 3500 PSI 3.6 gpm, GPM @ 4000 PSI 3.9 gpm