Chapin 4-Gallon Pro Backpack Sprayer: * 4" filtered opening makes filling easy * 4-gallon large tank * Deluxe padded carrying straps with waist/chest strap and cushion grip for fatigue-free operation * Positionable, large pump handle for comfortable, quick pressurizing and less pumping * Internal 4-position spray valve for expert pressure control from 15psi to 60psi * Multi-use nozzle tips are also included * Model# 61800