Description : 1.Non-toxic, medical grade PVC material; 2.size:5.0-8.5 3. endotracheal tube,reinforced endotracheal tube Description :product ... :endotracheal tube whit cuff or without cuff1.Non-toxic, medical grade PVC material; Clear, soft and smooth2. High volume, low pressure ... markings for easy observation5.size:5.0,5.5,6.0,6.5,7.0,7.5,8.0,8.5,9.0 endotracheal tube