At only 9.9 lbs., the lightweight SG 51 manual backpack sprayer helps fight user fatigue. Ideal for professionals, homeowners and gardeners in need of spraying insecticides, pesticides, fertilizers, and more, this sprayer boasts a number of features that make it even more user friendly. An interchangeable pump lever allows for the pump to be mounted on the right or left side, and the internal pump mechanism helps protect against the likelihood of external damage. Additionally, a separate pressure reservoir means getting the job done quickly thanks to not having to pressurize the entire tank.