4-Pack of new Pro-Team Products Pro-Flow Filter System with 20 micron replaceable sintered stainless filter. Award winning in-line filter system with replaceable filter element. Machined aluminum body with a black anodized finish. Sintered stainless filter elements help keep dirt and debris from ruining your motor's internals. 1/8" NPT Female threads on one end and 1/8" NPT Male threads on the other allows for simple installation. *We are now including 2 spare filter elements with this package for an even better value!!!