As one of Oral-Bs premium replacement toothbrush heads, the CrossAction features perfectly angled bristles at 16 degrees that target plaque to remove up to 100% more plaque vs. a regular manual toothbrush. Oral-Bs improved CrossAction toothbrush heads are developed with CleanMaximiser technology that turns green bristles yellow for optimal brush head performance and the best clean. The unique bristles reach deep between teeth to remove plaque and leave your whole mouth cleaner than with a regular manual toothbrush. Compatible with all Oral-B handles except Pulsonic & iO.With CleanMaximiser technology, green bristles turn yellow when it is time to replace your brush headUp to 100% more plaque removal and healthier gums vs. a regular manual toothbrushOral-Bs best for whole mouth cleaning (excluding Oral-B iO)Perfectly angled at 16 degrees to reach deep between teeth and sweep away plaqueCompatible with all Oral-B handles except Pulsonic & iOFrom the #1 brand recommended by dentists worldwideNumber of toothbrush heads included in this pack: 8