The Oral-B FlossAction Replacement Electric Toothbrush Head provides a floss-like clean for healthier gums. The round brush head is inspired by dental professional tools for a tooth-by-tooth clean, with specially engineered bristles. The FlossAction toothbrush head has unique floss action bristles to loosen plaque. Additionally, the Bristle Protection technology helps help keep your brush clean for up to 3 months*. Round brush head is inspired by dental professional tools for a tooth-by-tooth clean, with specially engineered bristles for optimal tooth coverage Oral-B is the #1 dentist-recommended toothbrush brand worldwide Compatible with all Oral-B handles except iO and Sonic Oral-B recommends brushing with Crest Toothpaste for optimal results * Inhibits microbial growth that may affect the bristles. The bristles do not kill bacteria in the mouth or protect you against disease. Always clean the product thoroughly after use.