... .Non-toxic, medical grade PVC material; 2.size:2.5-8.5 3. endotracheal tube,reinforced endotracheal tube Description :product name ... tube with visible markings for easy observation..5.size:2.5,3.0,3.5,4.0,4.5,5.0,5.5,6.0,6.5,7.0,7.5,8 ... .0,8.5,9. ... 0,9.5good packing and endotracheal tube with ...