The Set of 3 Oral B IO Replacement Brush Heads features advanced bristle technology for effective plaque removal. Each brush head is designed to fit seamlessly on Oral B IO toothbrushes, ensuring a perfect cleaning experience. The unique dental-inspired design, with its dark black color and soft blue bristles, enhances the aesthetic appeal while providing gentle yet effective cleaning for your teeth and gums. With this set, users can maintain optimal oral hygiene while enjoying the benefits of high-quality oral care tools.