Oral B Cross Action Power Replacement Toothbrush Heads Medium 2

Directions
How to replace your brush headTo Remove:Place enclosed QuickRelease tool on neck of toothbrush as shown and press, then slide brush head off toothbrush.To Replace:Lay new replacement brush head parallel to neck of toothbrush, then slide head towards handle until lock clicks into place. Check that brush head is firmly attached. Do not insert brush head at angle. USAGE ADVICE Dentists recommend replacing your brush head every 3 months. Adult supervision recommended when brush is used by children and person with special needs.