The Jet 427028 Inlet Port is replacement inlet adapter designed to fit dust collectors, allowing hose or ducting to be attached to the impeller housing so that sawdust and chips are drawn into the system effectively. When installed, it channels incoming air and particulates toward the collector’s fan and filtration components, using maintain proper suction and airflow. Made from durab... https://www.wholetoolbox.com/jet-427028-inlet-port