The OB-Dewalt DXSP190652 Internal Piston Pump 4G Backpack Sprayer is a medium-sized sprayer with a maximum working pressure of 150 psi, suitable for use in gardens, conservatories, porches, lawns, greenhouses, and patios. It is a manual sprayer powered by water and can also be used for insecticides, weed preventers, fungicides, herbicides, and fertilizers. Made of plastic in a yellow color, this DEWALT backpack sprayer has a 4-gallon capacity and comes with a rubber hose, making it ideal for indoor and outdoor use.