As one of Oral-B's premium replacement toothbrush heads, the Cross Action features perfectly angled bristles at 16 degrees that target plaque to remove up to 100% more plaque vs. a regular manual toothbrush. Oral-B's improved Cross Action toothbrush heads are developed with Clean Maximiser technology that turns green bristles yellow for optimal brush head performance and the best clean. The unique bristles reach deep between teeth to remove plaque and leave your whole mouth cleaner than with a regular manual toothbrush. Compatible with all Oral-B handles except Pulsonic & iO.