Replacement Toothbrush Heads Compatible for Philips Sonicare Replacement Electric Brush Head 4100 6500 6100 7500 5300 1100(4pcs)

- Perfect Compatibility - Specifically designed replacement brush heads compatible with 1100/4100/5300/6100/6500/7500 series, ensuring secure fit and optimal sonic performance. - Clinical-Grade Plaque Removal - Diamond-shaped bristle configuration removes 7x more plaque than manual brushing, with gentle gum protection. - Smart Replacement Indicator - Blue bristles gradually fade to white (after approximately 3 months of twice-daily use) to signal optimal replacement time. - Premium Bristle Technology - Features Dupont Tynex bristles with 0.01mm tapered ends for thorough yet gentle cleaning of teeth and gumlines. - Cost-Effective Value Pack - Includes multiple high-quality replacement heads at a fraction of OEM costs, with sterilization-ready BPA-free materials.