Oral-B Floss Action Electric Toothbrush Replacement Head features Micropulse bristles that penetrate deep between teeth to sweep away dental plaque. It delivers a clinically superior clean vs. the Oral-B Precision Clean toothbrush head. Compatible with all oscillating/rotating electric toothbrushes.* *except Pulsonic Characteristics Oral-B Floss Action Electric Toothbrush Replacement Head has the following characteristics: Advanced MicroPulse bristles reach deep between teeth for superior plaque removal Provides a superior interdental clean As one of Oral-B’s premium replacement toothbrush heads, the Floss Action toothbrush head provides a superior, comprehensive clean vs. a regular manual toothbrush. Its bristles clean tooth surfaces while specially designed MicroPulse bristles reach and clean deep between teeth for outstanding plaque removal vs. a regular manual toothbrush. The Oral-B Floss Action brush head features MicroPulse bristles that help provide a superior deep clean between teeth*2. The bristles on the professionally inspired round brush head are designed to clean deep between teeth to remove up to 100% more plaque than a regular manual toothbrush when used with an Oral-B electric toothbrush. How to use Apply Oral-B Floss Action Electric Toothbrush Replacement Head on the toothbrush. Change the toothbrush head every three to four months or when the bristles start to change color.