Oral-B iO Ultimate Clean Replacement Brush Heads, 2 Pack

[Replacement brush that realizes iO's plaque removal power] The Ultimate Clean replacement brush for the iO series features a precisely designed internal structure that enables iO's unique centrifugal micromotion. Only genuine products with a brand guarantee can maximize plaque removal power. [Maintain plaque removal power by replacing the brush properly] Replace the replacement brush approximately every three months. If the bristles spread apart, they will not reach the surface of the teeth and will not achieve their full plaque removal power. Replace the replacement brush at the correct time to ensure optimal plaque removal. [Unique 16-degree angled brush] Oral-B's exclusive technology features precisely designed bristles with a 16-degree angle that easily reaches between teeth, scraping away plaque even in hard-to-reach spaces. [Two bristles of different lengths] The Ultimate Clean has two bristles: the longer inner bristles reach between teeth, while the shorter outer bristles remove plaque from the surface.