Compatible with TB 30 / TB 50 + all conventional rotating toothbrush models Two different bristle lengths for clean teeth and healthy gums With practical protective cap Different colored rings to easily differentiate the removable heads Replacement set available with 4 and 8 units For optimal cleaning results, change the removable head every 3 months Product dimensions: Height 72 mm (74 mm with protective cap) ø Plate: 13.5 mm Stem ø: 12.2 mm ø Protective cap: 17.5 mm