Oral-B CrossAction Electric Brush Refill features precise angles that act on the plate to remove up to 100 more plate compared to a manual toothbrush. The Oral-B CrossAction toothbrush head shape has bristles specifically designed for optimal tooth coverage. The unique bristles clean deep between teeth to remove plaque and make your entire mouth cleaner than with a normal manual toothbrush. Compatible with Oral-B Genius, Pro, Smart and Vitality Electric Toothbrushes. - Removes up to 100 more plaque than a manual toothbrush - We can only guarantee that the brush heads - Oral-B fit the full range of Oral-B brush strokes excluding Oral-B Pulsonic - With a perfect angle of 16 degrees to deeply clean between teeth and remove plaque - Oral-B's unique round brush head cleans tooth by tooth for superior cleaning of healthier teeth and gums