Oral-B Precision Clean replacement brush heads with CleanMaximizer bristles for optimal cleaning, 8 pieces. The innovative CleanMaximizer technology changes the color of the green bristles to yellow, signaling the ideal time to replace the brush head for effective cleaning. The Precision Clean brush head surrounds each tooth individually and reaches difficult areas, removing up to 100% more plaque than a traditional manual toothbrush. Compatible with all Oral-B handles, except for Pulsonic and iO. Product features: - CleanMaximizer technology changes green bristles to yellow, indicating when to replace for cleaning - Removes up to 100% more plaque than a traditional manual toothbrush - Surrounds each tooth individually and reaches hard-to-reach areas - Compatible with all Oral-B handles, except for Pulsonic and iO - Package includes: 8 Oral-B Precision Clean replacement brush heads.