Product Description: The Oral-B iO Series combines powerful, but gentle micro-vibrations with Oral-B's unique dentist-inspired round brush head design for a professional clean feeling every day. For best results, use with Oral-B & Crest Toothpaste, Floss and Mouthwash. See also the Kids electric toothbrush, water flosser, manual toothbrush, whitestrips, and electric toothbrush ranges. Product Features: COMPATIBLE ONLY WITH ORAL-B iO ELECTRIC TOOTHBRUSH HANDLES You Will Receive 2 Oral-B iO Ultimate Clean replacement brush heads Combines Oral-B unique round brush head with gentle micro-vibrations for a surprisingly enjoyable experience and healthy teeth and gums for life Reduces plaque build-up along the gumline The dual-length bristles surround and reach deep in-between teeth and have higher density for an ultimate clean ​