• High compatibility: Our replacement heads are compatible with a wide range of Philips Sonicare toothbrush models, including Series 2 Plaque Control, Series 3 Gum Health, EasyClean, Essence+, FlexCare, FlexCare+, FlexCare Platinum, ProtectiveClean 4300 5100, HealthyWhite, and other snap-on handle models. • Effective cleaning and plaque removal: The bristles are placed at a special angle to allow deep cleaning between teeth and along the gum line, removing up to 8 times more plaque than a manual toothbrush. The bristle design provides gentle yet effective cleaning without irritating or damaging the gums. • Blue indicator bristles: The replacement brush heads include blue indicator bristles that fade to indicate that the brush head is worn out and needs to be replaced, ensuring optimal cleaning and care of teeth and gums. • High-quality DuPont filament: Made with high-quality material and subjected to rigorous testing, our replacement brush heads ensure effective cleaning and durability. • Clean and hygienic: The set includes 8 individually wrapped brush heads with a plastic protector on top, providing a hygienic way to protect them from dust and bacteria. Ideal for frequent travelers. • Round-tip bristles: The medium-strength round-tip bristles are safe and extra soft on the gums, preventing bleeding. • 304 stainless steel metal ring: Designed to balance vibration and reduce noise, providing deep cleaning with less noise and smooth operation. • Universal compatibility: Compatible with a wide range of Philips Sonicare models, including Series 2 Plaque Control, Series 3 Gum Health, HealthyWhite, FlexCare+, FlexCare Platinum, ProtectiveClean, EasyClean, PowerUp, and kids' models.