Best Seller | McKesson ETCO2 Nasal Sampling Cannula with O2 Delivery Adult Curved Prong / NonFlared Tip 7 Foot O2 Line 5/Pack Allows simultaneous O2 inhalation and end-tidal gas sampling 2 Inch pigtail with female luers 7 Foot O2 Line / CO2 tubing With female luer Not made with natural rubber latex. more | | $29.50 FREE shipping go to store |