The Oral-B Ultimate Clean iO Refill Brush Heads are designed to provide an exceptional cleaning experience for your teeth and gums. With Tuft in Tuft bristle technology, these brush heads effectively clean even the hard-to-reach areas of your mouth. The angled bristles are specifically designed for superior plaque removal, while the gentle micro-vibrating bristles provide a gentle and thorough cleaning. These refill brush heads are compatible with all Oral-B iO handles, allowing you to enjoy the ultimate clean with your Oral-B electric toothbrush. Oral B Replacement Brush Heads iO Ultimate Clean Black 2 PacksTUFT IN TUFT BRISTLE TECHNOLOGY: Provides deep cleaning in hard-to-reach areas of your mouth. ANGLED BRISTLES: Designed for superior plaque removal. GENTLE MICRO-VIBRATING BRISTLES: Ensure a gentle and thorough cleaning experience. COMPATIBLE WITH ALL ORAL-B iO HANDLES: Fits seamlessly with all Oral-B iO electric toothbrush handles. REFILL BRUSH HEADS: Conveniently replaceable for continued oral hygiene maintenance.