Replacement Brush Heads for Philips Sonicare Electric Toothbrushes, Compatible with G2 C1 C2 4100 5100 6100 9024, 10 Pack Replacement Brush Heads (5 White + 5 Black) Sonic Replacement Brush Heads.

Efficient Multi-Directional Cleaning: Utilizes sonic vibration technology to activate fluids in the mouth, generating a flow of cleansing energy that penetrates deep into the blind spots of the mouth to clean, delivering a comfortable teeth-cleaning experience! Wide Range of Compatibility: Compatible with Click-on Philips Sonicare Toothbrush Handle, Series 2 Plaque Control, Series 3 Gum Health, DiamondClean, FlexCare+, HealthyWhite+EasyClean, Essence+, FlexCare. Premium Bristles: For individual oral health, the dense bristles are close to the teeth for gentle cleaning, better fit to the teeth and gums, massaging effect on the gums, up to 4x surface contact, up to 8x plaque removal. High Quality Material: High quality traction guide material balances the brush head to ensure the vibration frequency. The metal ring on the bottom of the brush head and the embedded metal plate ensure that the power of the motor is transmitted to each bristle. Alert Bristles: After 3 months of use, the blue bristles will fade to white, telling you it's time for a new brush head.