Chapin 1449 Industrial 3.5-Gallon Viton Professional Concrete Funnel Top Sprayer (1 Sprayer/Package) 3.5-Gallon Tri-Poxy tank for durability and a wide funnel mouth opening for easy filling and cleaning Compatible for most professional concrete applications, suitable for homeowners too (check chemical manufacturers instructions) Brass nozzle and shut off with lock on feature. Poly holster keeps wand and nozzles secure Viton seals and gaskets designed to handle a variety of chemicals (check chemical manufacturers instructions) Reinforced hose to withstand harsh chemicals