The Harris Professional Sprayer is not your average spray bottle. It's extremely durable and comes with the following 5 unique features: Adjustable Nozzle, Chemical Resistant Plastic, Extended Trigger Sprayer, Pressurized Spring Mechanism, and Measurements. The Harris Pro Sprayer is so powerful it has an air vent design to prevent bottle collapse. Do not turn bottle upside down as liquid may escape from the sprayer vent. for use in garden, home, restaurants, manufacturing facilities, and much more. If using with chemicals, follow instructions on original container. Do not use with chlorinated solvent, paints, or liquids that harden or congeal or with combustibles or any material that may pose a health hazard if sprayed.