High-density polyethylene tank is UV resistant. Powered by a piston pump with Viton® seals for easy pressurization. Chemically resistant seals allow safer use with many types of chemicals. High-quality multi-directional nozzle allows spraying from all positions. Locking trigger reduces user fatigue. Pressure relief valve prevents overpressurization. 419 model has a metal 7″ wand for additional reach. Easily filled and cleaned after use. Built-in drift/drip guard provides added dimension of control.