Drain insert is ideal for drains. It helps keep hydrocarbons and sediment from entering drains and the water system. It contains filter strips that remove floating oil and other hydrocarbons. It is equipped with a heavy-duty tension rot that secures the drain. This insert is also used as the initial step in removing trash and some particulate matter, oils, and greases. It fits into storm drain inlets and contain trash racks and a small amount of filter media to remove sediments and some dissolved constituents.