Oral-B 3D White Electric Toothbrush Head multipack contains 4 individual replacement toothbrush heads. The toothbrush heads aid in removing surface stains on the teeth and brushes away plaque. The bristles change from green to yellow to indicate it\'s time to change the heads. As one of Oral-Bs premium replacement toothbrush heads, the 3D White features an exclusive polishing cup that whitens teeth starting from day 1 by removing surface stains. Oral-Bs improved 3D White toothbrush heads are developed with Clean Maximiser technology that turns green bristles yellow to let you know when to replace the toothbrush head 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. Key Features of Oral-B 3D White Electric Toothbrush Head 4\'sBrushes away plaque Removes surface stains Clean Maximiser technology for optimal brush performance