3 Pieces Baron Tubes Set Includes: (1)… Baron Tube #3FR, Size 1mm. (2)… Baron Suction #5FR, Size 1.7mm. (3)… Baron Tube #7FR, Size 2.3mm. Baron Suction Tube is an ENT instrument used for suctioning within narrow spaces, such as the ear canal. Suction can be controlled by covering a small hole that is located on the thumb plate slightly above the handle. There is a slight angle to the instrument so that the user's hand does not obstruct the view of the area being suctioned.