tube bushings fit into the end of the tube that is placed against the body. All
of the vacuum therapy systems that we have include the new style bushing in a
size B, or medium. The size A is the large, B is the medium and C is the
Please note: The manufacturer made changes to the tube. The Old tubes are clear
on the end opposite from the end that twists on to the vacuum head. The New
tubes are a Frosted at the end opposite the one that twists on to the pump head.