Oral-B iO Gentle Care Replacement Heads, Electric Toothbrush Brush Heads, Black, 4 Count - You will receive 4 Oral-B iO Gentle Care Replacement Brush Heads - Optimized bristle patterns adapt to the curves of the teeth and gums - High density dentist-inspired extra soft bristles for a gentle clean - Gently protects teeth and gums - Oral-B:Trust the brush Dentists use the most worldwide