Electric Toothbrush Heads Philips Sonicare C2 Optimal Plaque Defence 5300 Brush Box Contains 4 x Optimal Plaque Defence BrushSync enabled replacement heads Buy Philips Sonicare Premium Plaque Defence BrushSync Enabled Replacement brush Heads, 4pk Black - HX9044/33 on ✓ FREE SHIPPING on qualified... Compatible with ALL Philips Sonicare handles, including DiamondClean and ProtectiveClean Sonicare Premium Plaque Defence 4 pack brush heads Features densely-packed, high-quality tufts to effectively remove plaque Genuine Philips Sonicare electric toothbrush replacement brush heads Compatible with all click-on Sonicare models, these replacement brush heads remove up to 7x more plaque than a manual toothbrush Product Description Philips Sonicare Optimal Plaque Defence BrushSync enabled replacement heads - 4pk. Safety Warning Warning: not suitable for children or teenagers. Replace the brush head every three months.