With the Oral-B Pro-Flex Stain Eraser Manual Toothbrush, you can discover a whiter smile and remove plaque. That's because its dual-flexing head design combined with a unique Stain Eraser, work together to remove up to 90% of surface teeth stains and reveal a more dazzling white smile. Gentle on gums, but tough on stains, the Pro-Flex Stain Eraser toothbrush is the revolution you've been hoping for in your manual toothbrush.