The 425 you've been buying for years now comes with $20 in Free Upgrades! The 425-101 comes with a brass adjustable nozzle, deluxe straps, fold away pump handle, and new carry handle. Large 4.5-in opening for easy filling and cleaning. Shut-off valve and wand with an overall length of 28in for hard-to-reach places. Padded shoulder straps for greater comfort. Piston Pump Sprayer - The industry standard. Chemically resistant Viton seals for long life and durability. The 425 is capable of producing a wide pressure range of up to 90 psi. Easily and effectively handles disinfectants, fertilizers, herbicides, pesticides, and formulations for tree, shrub and plant protection.