425 Solo Backpack Sprayer (SL425)
4 gallon, fill neck opening 4.5in., piston pump, 85psi working pressure, weight 12lbs., parts made o f corrosion-resistant plastic, no metal or rubber parts are exposed to chemicals, handle can be swi...
Pros: Works great. Good power. Dependable. Consistant power flow.
Cons: Zero. Even though it's 5gal you don't have to fill it up.