Ergonomic design and extra long trigger provide unsurpassed comfort. 1.3 ml per stroke, 30-40% greater than standard trigger sprayers. Extra large spray pattern. Unique internal piston design provides better chemical resistance. Works well with most common janitorial chemicals, even D-limonene products. Nozzle O-ring and piston cup are made of chemical resistant Viton. Holds up against harsh chemicals and solvents. Use with chemicals that cause standard trigger sprayers to fail.