The Oral-B FlossAction Replacement Electric Toothbrush Head provides a floss-like clean for superior plaque removal vs. a regular manual toothbrush. 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 Bacteria Guard Bristles help keep your brush clean for up to 90 days. It is compatible with the entire lineup of Oral-B Rechargeable Handles, excluding Sonic toothbrushes. The Oral-B Replacement Brush Heads, Floss Action are designed with Bacteria Guard Bristles to provide you with electric toothbrush heads that stay clean for up to 90 days. The Bacteria Guard Bristles do not kill bacteria in your mouth, but they do inhibit microbial growth that may affect the bristles. Microbial growth on the bristles may cause the bristles to wear out faster or become less effective for cleaning your teeth. Also, make sure you clean your bristles and rinse them with water after each use. Doing so may help extend the longevity of your Oral-B heads. UPC: 069055881262 Weight: 1.57 lbs RKU: SAM980284248