Check the listing for details. Super Calcite 10" inline filter K2548-BB to upgrade your RO Reverse Osmosis. Condition: New. Listed at 28.99 USD. Upgrade your system: add extra stage to your Reverse Osmosis (RO) Water Purification Systems with US Made Omnipure 10" Calcite Inline Filter K2548-BB OVERVIEW: This is the best filter if your water has a pH level of 6.8 or lower. Physiological disease is almost always the result of too much acid stressing the body's pH balance. For more information on the health benefits of higher pH levels in water, please visit https://ph2o.blogspot.com/ Raise pH level from 7 to 9 Package content: - Omnipure Calcite (Acid Neutralizer) K2548BB (made in USA). Fitting: comes without fitting. 1/4" female. If you need 1/4" elbow fitting, just contact us via Ebay after completing auction. Service life - 6-12 months Shipping: We ship within 1 business day via USPS Priority Mail. Shipping (International): We ship within 2-3 business days via USPS International Priority Mail service. Returns/Exchange: Only of defected. Warranty: Warranty: 30 days.