The Oral-B iO Ultimate Cleaning Brush removes up to 100% more plaque than a conventional manual toothbrush, providing the best cleaning from Oral-B. The revolutionary magnetic technology of the iO toothbrush delivers energy precisely to the tips of the bristles. The twisted-in bristles adapt perfectly to each tooth, while the 'bristle-in-bristle' bundles reach deep into the interdental spaces. The iO brush attachments are only compatible with Oral-B iO electric toothbrushes.