The Oral-B Dual Clean offer interchangeable brush heads for your Oral-B rechargeable toothbrush. Youll get twice the cleaning action with a larger shaped brush head. The indicator bristles fade halfway down so you know when to replace your brush. They come individually packed for convenience and hygiene. Model number: EB417-4. Pack of 4. Oral-B is the number 1 brand used by dentists worldwide. For better results, dentists recommend changing your brush every 3 months. Compatible with all Oral-B rotating brushes. Manufacturers 2 year guarantee.