Remove up to 100% more plaque and healthier gums compared to a regular manual toothbrush With CleanMaximiser technology, green bristles turn yellow when it's time to replace your brush head Placed at a perfect 16 degree angle to get deep between teeth and remove plaque Dentists recommend replacing the brush head every 3 months for optimal cleaning Compatible with all Oral-B handles except Pulsonic and iO The CrossAction is one of Oral-B's high-quality replacement brush heads. It has bristles set at a perfect 16-degree angle to remove 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 brush head performance and best cleaning. The unique bristles go deep between the teeth to remove plaque so your whole mouth is cleaner than with a regular manual toothbrush. Compatible with all Oral-B handles except Pulsonic and iO.