Buccal tubes Magnum DOUBLE convertible buccal tube (5 units) CD1 €71.00 Pack of 5 units. The double convertible Magnum mouth tube is small in size with rounded surfaces for patient comfort. For first molars. Manufactured with 316 steel with the highest quality. Two types of base, one to weld directly to the band and the other with 80 micron mesh to cement directly on the molar. View