The Oral-B Io Ultimate Clean replacement brush heads are engineered for a superior clean that reaches deep between teeth and along the gumline. Designed specifically for the Oral-B Io electric toothbrush series, these bristles effectively remove plaque while remaining gentle on your teeth and gums for a healthier smile. Enjoy a professional-level clean at home with these high-performance heads. Each pack includes 6 replacements to ensure you maintain optimal oral hygiene for months to come.