8 Replacment Tooth Brush heads for Pursonic Electric toothbrushes models S400 Deluxe and S450 Deluxe 8 Replacment Tooth Brush heads for Pursonic Electric toothbrushes models S400 Deluxe and S450 Deluxe 8 Replacment Tooth Brush heads for Pursonic Electric toothbrushes models S400 Deluxe and S450 Deluxe Effectively removes plaque with out irritating gums Reaches deep between teeth to help remove plaque Helps remove tough stains for whiter looking teeth Gentle on Teeth and Gums 8 pack of replacement brush heads for Pursonic S400/S450/S600 models.