The Chapin Pro Series are poly sprayers that are designed for fertilizer, herbicide, fungicide and watering applications. The Pro Series is enhanced with a 34 inch reinforced hose and 40% greater pump volume per stroke. They feature a twenty inch poly wand, shut-off with cushion grip, built-in filter and Viton seals. The large opening measures four inches for convenience in filling and cleaning. The lightweight, translucent tank is made of polyethylene which is imune to most pesticides, fertilizers and herbicides. Choose from 1, 2, or 3 gallon models.