TANKLIFE? K-series inline filters are made of FDA approved food grade polypropylene. The filter inlet and outlet connections are molded inside the filter body and cap as a single unit to prevent leakage. Spin welding techniques create a strong seal between the filter body and cap without the use of contaminants(glue etc.). Quick connect stem connections allow for hassle free installation in seconds. Grey rubber sponges protect the stem connections until the product arrives at the end-user. All filters include metallic look labels, which combined with a transparent packing for each filter create high aesthetic value and make our K-series inline filters appealing and appropriate for every drinking water treatment system.