Aqua-Rex WK1 Physical Water Conditioner for Residential<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Suitable for most residential applications</li><li>Removes existing limescale as well as prevents future build-up</li><li>Saves energy， cuts bills</li><li>No pipes to cut. Easy 20 minute install</li><li>Maximun pipe diamter: 1"</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41%2B7qeC7krL.jpg" noproxy>