Our replacement toothbrush heads are made of filament, recognized as the highest quality in the synthetic filament industry for oral care over 70 years. The brush is made of American Thynex nylon. These rounded health toothbrush heads are the reliable choice for gentle, safe, and effective brushing, plus benefits for oral health. Innovative rounded head design, dome-shaped 360-degree full coverage of teeth, small and soft design, deep cleaning and care for gum tissue. High-density brush uses irregular bristle tufting technology, increasing hair volume by 40% for more effective cleaning of stubborn stains. You need to replace the toothbrush head. Generally, we recommend replacing it every three months. Material: Plastic + nylon bristles Color: White Package contents: 12 x electric toothbrush heads Only the above package contents are included; other products are not part of this set. Note: Light reflection and different screens may cause the color in the image to slightly differ from the actual product. The allowed measurement error is +/- 1-3 cm.