These Oral-B Sensitive electric toothbrush heads surround each tooth for an amazing, tooth-by-tooth clean. Their gentle and extra-soft bristles are especially ideal for cleaning around sensitive and inflamed areas. Model number: 4210201849834. Pack of 4. They provide a superior clean, specifically designed for those seeking a gentle, yet effective, brushing experience. Compatible with compatible with the entire lineup of Oral-B rechargeable electric toothbrush handles, except for Oral-B Sonic toothbrushes.