The Hudson RCI Bi-Flo cannula provides the capability of delivering supplemental oxygen while simultaneously sampling expired CO2.The unique, patented design allows delivery of oxygen to both nasal prongs and sampling of expired gases from both nares simultaneously. Available in three convenient adult configurations for use with any sidestream CO2 monitor. Each cannula packaged with anesthesia machine adapter. Oxygen Tube 7ft Sampling Line Male Leur Connector, 25 per case