Have great dental care with these Charcoal Oral B Compatible Electric Toothbrush Heads Bamboo Charcoal is the natural filter for your teeth Uses strong cleaning power to absorb all kinds of toxins and bacteria in the mouth Helps you to have a sparkling smile and fresh breath Soft bristles in the centre to protect tooth from harsh brushing Colour coded rings for individual identification Note: recommended to change your toothbrush every 1-3 months Buying Options: 3.99 pounds instead of 11.99 pounds for 4 x Toothbrush Heads - save 67% 7.99 pounds instead of 23.98 pounds for 8 x Toothbrush Heads - save 67% 12.99 pounds innstead of 47.96 pounds for 16 x Toothbrush Heads - save 73%