REF 7466185
Oral B Precision Clean Refill x4 is a refill compatible with all Oral-B models except Oral B iO and Pulsonic. With CleanMaximiser technology, the bristles change color when it's time to change, thus achieving exceptional cleaning. They are gentle on teeth and gums and help whiten teeth. You should change the head every 3 months or whenever they are visibly damaged.