Designed to connect to an under or over the counter filter, reverse osmosis system, distiller or other water treatment system, the River of Life Vortex Water Revitalizer for Filters will dramatically improve the taste, feel, quality and health of processed water. Installation should always be done after the filter.  For installation, each ending requires a 1/4" coupling, so choose the appropriate Snap-on Fittings for your specific installation.  60-Day Money Back Guarantee and a 10-Year Limited Warranty. Try it out risk free today!  This product was Made in Canada.