Cuffed Tracheostomy Tube, Size 6 mm (Portex)UOM: each Cuffed Nonfenestrated Tracheostomy Tube, Size 6 mm I. D. Ultra tracheostomy tubes are constructed of thermosensitive material with sufficient initial rigidity for insertion that conforms to the individual patient's upper respiratory tract at the body temperature Some of the tubes feature a Soft Seal cuff, which is a low pressure, high volume cuff Plus, the cuff is designed to help minimize trauma upon insertion and provide an effective seal