Oral-B CrossAction White X-Filaments Toothbrush Replacement Heads, Pack of 4 The Oral-B Pro Cross Action toothbrush head features more than 2200 perfectly angled bristles to remove up to 100% more bacterial plaque for cleaner teeth & healthier gums vs. a manual toothbrush. Oral-B genuine brush heads are designed with new X-shape bristles that clean in areas that round ones cannot reach. Its brush head usage indicator turns bristles from green to yellow showing you when to change for 100% cleaning efficacy. Guaranteed fit with Oral-B electric rechargeable toothbrushes except for Pulsonic & iO toothbrushes. Oral-B's improved 3D White toothbrush heads are developed with CleanMaximiser technology that turns green bristles yellow for optimal brush head performance and the best clean. The unique bristles brush away plaque for a more advanced clean than with a regular manual toothbrush. Compatible with all Oral-B handles except Pulsonic & iO. Features: Removes up to 100% more bacterial plaque for cleaner teeth and healthier gums vs. a manual toothbrush Only genuine Oral-B brush heads feature X-shape bristles that clean in areas that regular ones cannot reach for optimal cleaning efficacy Oral-B Cross Action features unique 16-angled bristles to perfectly adapt to each tooth for deep cleaning Guaranteed fit with Oral-B electric rechargeable toothbrushes except Pulsonic & iO toothbrushes Package Includes: 4x Oral-B CrossAction White Replacement Toothbrush Head | Oral B Unisex Cross Action White X-Filaments 'Toothbrush Replacement Heads', Pack of 4