DESCRIPTION: STERILE DISPOSABLE MEDICAL GRADE PLASTIC ***** TUBES WITH OPAQUE RADIO-MARKING HAVE A HIGH VOLUME LOW PRESSURE ON THE END OF THE TUBE MATERIAL: MEDICAL GRADE FLEXIBLE PVC BALLOON HAS TO BE CONCENTRIC HIGH VOLUME, LOW PRESSURE AUTORETENTIVE BALLOON LOOKING TO PURCHASE 1 TO 2 MILLION UNITS PER YEAR Show More