Color-coded for easy size identiication, these unique Guedel Oral Airways feature a dedicated internal channel to direct suction catheters. hese airways serve as a bite block and keep the patient's airway from collapsing. Made of polyethylene plastic. 6-pack includes sizes 40mm, 60mm, 80mm, 90mm, 100mm and 110mm. All packed 50pcs/Box, 10Boxes/Case