Rod Core - Drum Core Inductor we offer, also called bobbin center inductors are so named claiming the wire is twisted straightforwardly on the center. It is round and hollow, or barrel shaped with end tops. It is a passive element that highlights a fix conductive cable to make a magnetic field and store energy. Provided inductor contributes to less signal loss, handles stable current flow & successfully filters EMI interference. Customers can easily get this inductor from us at reasonable rates.