Nikken Optimizer II Replacement Ring</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Easy installation and no pre-soak needed</li><li>Adjusts pH， enhances mineral composition， and adds pi</li><li>Water flows through the Optimizer’s pi ring， containing pi ceramic material</li><li>Compatible with both PiMag Optimizer II Pitcher and PiMag Optimizer II (sold separately)</li><li>Includes: 1 Nikken Optimizer II Replacement Ring</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31fBow51GQL.jpg' noproxy></br>