Oral-B Replacement Brush Heads FlossAction, 4 PackNew features have been added to meet consumer needs, and replacement brushes are now available with the highest level of plaque removal ever! *Brush with interdental wiper *X filament wiper scrapes out plaque between teeth *Special X shaped bristles scrape away dirt from small areas that regular bristles can't reach *X shaped bristles scrape out plaque from places regular bristles can't reach, for a deeper clean. *Replacement color signal *Maintains