FEATURES: Large 4.25" opening. Shut-off valve/wand overall length of 28" for hard-to-reach places. 4' high-pressure hose. Padded shoulder straps for greater comfort. Chemically resistant Viton® seals. With its connecting rod-activated piston pump, the 425 is capable of producing a wide pressure range of up to 90 psi, (optional plug required to obtain 90 psi), and is capable of performing virtually every spraying task. Easily and effectively handles disinfectants, fertilizers, herbicides, pesticides, and formulations for tree, shrub and plant protection (clean sprayer between use). The rugged high-density polyethylene tank and internal Viton® seals insure long life and durability.