"Package includes 5 genuine Oral-B FlossAction Electric Toothbrush Replacement Brush Heads", "The Floss Action toothbrush head provides a floss-like clean for healthier gum* * does not replace flossing", "Max Clean Bristles turn yellow to signal when to change your brush head to maximize your clean", "FlossAction Bristles loosen plaque between teeth", "Compatible with Oral-B rechargeable handles, except for Oral-B sonic and Oral-B iO toothbrushes"