Great Compatibility: REDTRON replacement heads can fit for most Oral b electric toothbrushes such as Oral B Pro, Genius, Vitality and Smart Series , except for Oral B Pulsonic and Oral iO16Pcs Replacement Toothbrush Heads: Including 4 EB20-P brush head, 4 EB50-P brush head, 4 EB18-P brush head, 4 EB25-P brush head, REDTRON electric brush heads fit all your personal needsRemove Plaque and Whiten Your Teeth: REDTRON lightweight brush heads for oral b are designed ergonomically which can remove plaque efficiently and reach deep between your teeth, offering you a comfortable cleaning experiencePremium DuPont Bristle: REDTRON electric toothbrush heads for Oral B adopt DuPont filaments, which has been approved as the apex of quality in the oral care synthetic filament industryBlue Bristles Reminder and Color Coded Ring: Blue reminder bristles will be faded to white when a replacement is needed. The color coded ring will help you to pick up your personal brush heads so that you can share the package with the family