Original Hydrotech RO Reverse Osmosis Water Filters Carbon Sediment Cartridges Membrane SetYou get 1 x Hydrotech® S-FS-02 Sediment Prefilter CartridgeModel # S-FS-02 | Part#41400008 Replacement Sediment Cartridge for HT and HTF Series Reverse Osmosis Systems, Black End Caps.We ship original Hydrotech brand filters and membranes. Some other companies sell knock off filters not made by Hydrotech.You get 2 x Hydrotech® S-FS-19 Carbon BlockPre- and Post-Filter CartridgeModel # S-FS-19 | Part#41400009 Replacement Carbon Block Pre- and Post-Filter Cartridge for HT and HTF Series Reverse Osmosis Systems, Blue End Caps.We ship original Hydrotech brand filters and membranes. Some other companies sell knock off filters not made by Hydrotech.You get 1 x Hydrotech® 33001056TFC Dry Reverse Osmosis Membrane,75 GPDModel # 33001056 Replacement Membrane for HT and HTF Series, Yellow/Black Band.We ship original Hydrotech brand filters and membranes.These new dry membranes do not need to be refrigerated and have a long shelf life.Thank you for your visiting.