About this item MULTIPLE BRISTLE LEVELS- these soft sensitive precision floss clean action oralb toothbrush heads reach deep into the gums and inter-dental areas of the mouth, preventing cavities and removing plaque, giving you that charcoal clean effect QUALITY AND CONVENIENCE WHILE YOU SAVE $$$$$$$! COMPATIBLE WITH ORAL-B Sonic series ONLY SATISFACTION GUARANTEED! Top quality brushes have passed safety requirements. We will make things right for you! INDICATOR ACTION BRISTLES begin to fade when it’s time to replace your brush head!. These only fit the Sonic Complete (S-200, S-320, S18, etc.) or Sonic Vitality models.