Use Chapin's 1949 open head form oil sprayer for most professional concrete applications and extreme chemicals. This sprayer has a 3.5-gallon Tri-Poxy tank - triple protection against rust, corrosion, and damage from dents so it will last.  It has Chemical-resistant seals, a 4-inch wide mouth opening for easy filling and cleaning. It also has a 48-inch reinforced hose with threaded fittings for no leaks. A Brass pump, wand, nozzle and shut-off with lock-on feature for ease of use and Unique Tri-Lock seal feature that locks the pump cap tight so no air leakage out of the top of the tank.