Oral-B Floss Action Replacement Toothbrush Head with Clean Maximiser, Pk of 4As one of Oral-B’s premium replacement toothbrush heads, the FlossAction features specifically engineered MicroPulse bristles that loosen plaque to remove up to 100% more plaque vs. a regular manual toothbrush. Oral-B’s improved FlossAction toothbrush heads are developed with CleanMaximiser technology that turns green bristles yellow for optimal brush head performance and the best clean. The unique round brush head and bristles reach deep between teeth for optimal tooth coverage. Compatible with all Oral-B handles except Pulsonic & iO.Features:With CleanMaximiser technology, green bristles turn yellow when it is time to replace your brush headUp to 100 Percent more plaque removal and healthier gums vs. a regular manual toothbrushOral-B’s best for deep interdental cleaning (excluding Oral-B iO)With MicroPulse bristles which loosens plaque and provide optimal tooth coverageCompatible with all Oral-B handles except Pulsonic & iOPackage Includes: 4x Oral-B Floss Action Replacement Toothbrush Head