Philips Sonicare Sensitive Standard sonic toothbrush head HX6053 3pk Type: Accessories Features: Gentle Yet Effective Cleaning. Soft on teeth and gums. Effective on plaque. Softest Sonicare brush head ever - Innovative new brush head profile delivers gentle experience - Ultra soft bristles for a more effective, gentle cleaning Designed to optimize performance - Reminder bristles ensure you are getting an effective clean A brush head that fits multiple handles - Snap-on brush head Gentle yet effective cleaning - Gently removes plaque for an absolute clean and smooth feel Ease of use - Suitable for these models: FlexCare+, FlexCare, HealthyWhite, HydroClean, EasyClean, DiamondClean - Brush head system: Easy snap-on brush heads for optimal hygiene Technical specifications - Operating time: For optimal results, a new brush head is recommended every three months.