The Oral-B Precision Clean refill features a round brush head inspired by professional dental tools for an amazing tooth-by-tooth clean for superior plaque removal*. It works with unique Oral-B technology that oscillates, rotates and pulsates, allowing the bristles to surround each tooth. Additionally, the Bacteria Guard Bristles help keep your brush clean for up to 90 days**. It is compatible with the entire lineup of Oral-B Power Handles, excluding Sonic toothbrushes.�