1. Stage: Sediment 5 microns: Filters insects; sand; iron, metal fragments; suspended matter from the water, the block reduces chlorine, solvents, drug residues, pesticides, heavy metals 4. Stage: 1x 800 GPD high performance membrane, heart of the System, filters up to 98% of pollutants from the water such as lead, arsenic, mercury, uranium, drug residues, Pesticides, insecticides, viruses, bacteria, nitrate, iron, cocaine, etc. Mounting accessories, water adapter 1/2", (If you need a different size, please let us know immediately after purchase)Assembly key, assembly instructions in German and English as soon as possible. The complained device will then be checked and repaired immediately. renewed. Excluded from this are all wearing parts such as filters, membranes, connections, hoses an.