We are offering catheter mount.# designed for delivery of oxygen or gases to the patient and can be connected with et tube for respiration.# provided with 22 mm standard female connector on both the ends with id of 15 mm.# collapsible corrugated tubing being inert to all anesthetic gases and reagents. General features: designed to secure the airway and maintain the gas exchange in the lungs by inserting into the trachea through the oralnasal cavity.manufactured from special nontoxic, clear, transparent, thermo sensitive siliconized pvc material to protect delicate mucosal tissues and readily conforms to the body contour.proximal end fitted with standard 15 mm connector.sizes (mm):plain - 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0 & 5.5cuffed - 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5 & 10.0