Global Water RO-505 5-Stage Reverse Osmosis System Water Quality Filter- 24 HOUR USA Tech Support - Plus Extra Set Of 4 Filters For Free High quality Quick Connect fittings for easy steps, convenient, and secure installation. Lifetime 24 hour technical support from Global Water in USA, CA (818) 404-6677 Removes up to 99% of Contaminants such as chlorine, lead, bacteria, arsenic, fluoride, and other contaminants with high quality of filters.