TheOral-B Pro Cross Actionbrush head features over2,200 perfectly angled 16 bristlesthat removeup to 100% more plaquefor cleaner teeth & healthier gums compared to a manual toothbrush. Original Oral-B brush heads are designed with newX-shaped bristlesthat clean areas that round bristles cannot reach. The brush head usage indicator changes the bristles from green to yellow, reminding you when to change them to maintain 100% cleaning efficiency. Guaranteed to fit all Oral-B electric rechargeable toothbrushes except Pulsonic & iO toothbrushes.Removesup to 100% more bacterial plaquefor cleaner teeth and healthier gums compared to a regular manual toothbrushOnly genuine Oral-B brush heads featureX-shaped bristlesthat clean areas that regular bristles cant reach for more effective cleaningOral-B Pro Cross Action has unique fibers with a16 anglefor perfect adaptation to each tooth and deep cleaningGuaranteed to fit all Oral-B rechargeable toothbrushes except Pulsonic & iO toothbrushesBrush head usage indicator:the bristles change from green to yellow, reminding you when to change them for 100% effective cleaningOral-B is the leading electric toothbrush brand used by dentists around the world with clinically proven results