S5-TO-S6 RO Kit for 2.5&rdquo; diameter Inline Filter KIT includes two 2.0"x2.5" double clip, and and two (2) Male Connectors with 1/4" NPTF Thread Kit also includes a 2.6-inch 1/4" tube Kit is used to transform a Reverse Osmosis (RO) system to alkaline RO System Clips connect the 2" diameter post carbon filter to the 2.5" inline filter used in RO6-100-ALK