As one of the leading Oral-B 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. \ \ Oral-B's improved Crossaction brush heads are developed with CleanMaximiser technology that turns green bristles yellow for optimal performance. The uniquely designed bristles reach deep between teeth to remove plaque and leave your entire mouth cleaner than a regular manual toothbrush. \ \ Compatible with all Oral-B handles except Pulsonic & IO. \ \ \ Oral-B's best choice for cleaning your entire mouth (excluding Oral-B IO) \ Up to 100% more plaque removal and healthier gums than a regular manual toothbrush. \ with cleanmaximiser technology, the green bristles turn yellow when it's time to change your toothbrush head \ has ideal 16-degree angles to reach deep between teeth and remove plaque \ dentists recommend changing your brush head every 3 months for superior cleaning \ \ \ number of toothbrush heads included in this pack: 12 \