The Oral B CrossAction Replacement Electric Toothbrush Head, available in a convenient pack of 4, is designed to provide a superior and effective clean for your teeth and gums. With its innovative CrossAction bristle arrangement, this replacement head reaches deep between teeth to remove plaque and gently sweeps away surface stains for a brighter smile. These precision-engineered heads fit perfectly with Oral-B electric toothbrushes and feature indicator bristles that fade over time to signal when it's time for a replacement. Keep your oral hygiene in top shape with these high-quality, dentist-recommended toothbrush heads.