Easy to install and use. Attaches to any parts washer. Extends parts washer solvent life; fewer change outs needed. Pays for itself in one month if you change your solvent on a monthly basis. Simply attach the flow-through nozzle on your parts washer and leave your parts washer running for an hour or two. During this cycle time the dirty solvent is flowing through the special absorbent media, cleansing the solvent of all accumulated oil and grease. Reusable. Saves time and money.