Oral-B Cross Action Replacement Electric Toothbrush Heads – 4 Pack (Indicator Bristles, Deep Clean)Elevate your oral care routine with the OralB Cross Action Replacement Brush Heads (4pack). Engineered with precisionangled CrissCross bristles (16) to sweep away up to 100 % more plaque than a manual brush, these heads deliver a dentistinspired, toothbytooth clean. The innovative indicator bristles fade from green to yellow, signaling when its time for replacementtypically every three months. Compatible with most OralB rechargeable toothbrush handles