Oral-B Cross Action 8 Replacement Brush Heads are designed to clean deep between teeth with bristles angled at 16 degrees. The round head and crisscross bristles remove more plaque than a regular manual toothbrush, helping you keep your mouth fresh and healthy. Oral-B Cross Action 8 Replacement Brush Heads fit most Oral-B electric toothbrushes and have color-fading bristles to show when it’s time to replace them. Easy to use and dentist-recommended for a better clean every day.