25 Pack 10″ T33 Reverse Osmosis Post Inline Coconut Shell Water Filter 1/4″ threadedHigh Quality, Brand New , shrink wrapped sealed Maximum flow 0.75 GPMService Life 2500 Gallon Fits any standard RO system Reduces: ChlorineBad taste and odor Compatible With:US Water RO SystemsUS Water GalaxyUS Water AquapurionWatts 5 stage systemsPurevalueProline PlusProline GoldPurenex RONelsonIsopureiSpringTier1HydronixMax Water SystemsAQUARIUMAPECTitan Water ProHome PurePremier Water SystemBlue WaveWater COP5EZ50 GTS-550SNRO05-50 200-GX-5050ISO-RO5 GTS-550Tier1 RO5-WFRO550-WW-525WP5-50RCW5