The Chapin Industrial Concrete Sprayer has a 3.5-gallon tri-poxy lined steel tank that provides triple protection against rust, corrosion and damage from denting. Featuring a large 4-inch mouth opening for easy filling and cleaning, professional dripless shut off with Comfort Grip lock on/off feature, brass wand, brass nozzle, reinforced hose with threaded fittings and chemical resistant seals for most concrete sealer applications (check chemical manufacturers instructions before use). Our open head tanks have a unique Tri-Lock seal that insures the pump cap locks tightly into place. We also offer full technical support via our Customer Service Team at and product information atFrom the Manufacturer Our residential, professional and industrial sprayers are designed to meet the needs of your lawn, garden, home, farm, professional, or commercial project. With a focus on innovation gained through industry knowledge, Chapin products have been manufactured with excellence in the United States using global components for more than 130 years. We offer full technical support at to help you find the right sprayer for your application or visit our website atfor more product information and specifications. Chapin, the way to spray since 1884.