Chapin 22149XP 3-Gallon Dripless Xtreme Poly Concrete Open Head Sprayer For Professional Concrete Applications, 3-Gallon (1 Sprayer/Package) 3-Gallon poly tank with wide mouth opening for easy filling and cleaning Dripless trigger grip shut-off with lock-off feature to avoid accidental discharge 36-inch brass wand and female brass nozzle Pressure relief valve built into the tank Compatible for most professional concrete applications and extreme chemicals including Acetone, Naphtha, Xylene and Toluene (check chemical manufacturers instructions)