Feature:1. Health And Safety: Toothbrush heads are made with health and safety standard of oral hygiene technology to ensure a great brushing experience.2. Careful design: The rounded high density bristles better fit the curve of the teeth and gums, clean the blind areas of the oral cavity in a targeted way, and thoroughly clean the oral cavity.3. Efficient Cleaning Power: The round head design precisely wraps the teeth and transmits the energy to each bristle precisely, making the cleaning force lasting and efficient.4. Wide Applicability: Replacement brush heads are compatible with most electric toothbrushes, providing a more convenient option.5. Reminder Bristles: Bristles for a comfortable clean, perfect for beginners, for superior plaque removal. Official experts recommend replacing brushes every 3 months.Specification:Item Type: Toothbrush HeadsMaterial: POMWeight: Approx. 30g / 1.1ozProduct Size: Approx. 7x2x2cm / 2.8x0.8x0.8in.Package List:4 x Toothbrush Heads