Oral-B Crossaction Brush Heads with CleanMaximiser Technology As one of Oral-Bs leading replacement brush heads, Crossaction features bristles angled at exactly 16 degrees and fights plaque, removing up to 100% more plaque than a regular manual toothbrush. The uniquely designed bristles reach deep between teeth to remove plaque and leave your entire mouth cleaner than a regular manual toothbrush. Oral-Bs improved Crossaction brush heads have been developed with CleanMaximiser Technology that turns the green bristles yellow when its time to change your brush head for optimal performance. Compatible with all Oral-B handles except Pulsonic & IO. Contents: 8 Oral-B Crossaction Replacement Brush Heads Features & Benefits: Oral-Bs best choice for cleaning the entire mouth (excluding Oral-B io). Has ideal 16-degree angles to reach deep between teeth and remove plaque. Up to 100% more plaque removal and healthier gums than a regular manual toothbrush. With CleanMaximiser technology, the green bristles turn yellow when its time to change your brush head. Dentists recommend changing your brush head every 3 months for superior cleaning. From the #1 electric toothbrush brand recommended by dentists worldwide.