Used to secure and open airways for patients in case of emergencies. Made from soft, non-irritant medical grade PVC. Anatomically designed with smooth round edges, thin wall and kink resistance for  maximum patient comfort. E.T.O. sterile & pyrogen free. Sterile, single use only. Sizes : 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5mm.