TastePURE's Portable Water Softener helps reduce the hardness of your RV or boat's water. Premium ion exchange resin replaces minerals, such as magnesium and calcium that harden your water. A compact, space-saving design allows the portable water softener to be stored in tight places. It features a convenient carry handle for easy transportation, a large mouth opening for effortlessly adding salt for regeneration, and a garden hose plug and cap to keep contents secure during transportation and storage. Product includes: (1) ready-to-use portable water softener, (50) test strips, (1) 4-foot hose and (1) male-to-male hose fitting for regeneration. The portable water softener measures 8 -inches (diameter) x 20 -inches (height), has flow rates up to 4 GPM and a 10,000-grain capacity. Product regenerates with (2) boxes of common table salt (not included). For external use only.