The Philips Sonicare HX6058/87 replacement brush heads are designed specifically for adults with sensitive teeth and gums. This set includes 8 brush heads, each featuring over 3,000 densely packed extra-soft filaments that gently clean the mouth while removing up to ten times more plaque than a manual toothbrush. These attachments support Sonicare Fluid Action technology, which helps drive fluid deep between teeth for a more thorough clean. They are compatible with most Philips Sonicare handles, though you should note they do not work with the Philips One series.