1. High-Quality Materials: These electric toothbrush heads are made of High-Quality Materials, which are and safe for daily use. The materials used in the toothbrush head construction that it last for a long time without causing any harm to your teeth or gums. 2. Standard Size Packaging: The standard size packaging of 14x9.5cm makes these replacement toothbrush heads compatible with most electric toothbrush models. This ensures that the customer can use the product immediately without worrying about the compatibility. 3. Compatible with Most Electric Toothbrushes: These toothbrush heads are compatible with most electric toothbrush available on the market. This feature makes it more convenient for customers to purchase replacement toothbrush heads as they do not have to worry about the of their toothbrush. 4. Specifically Designed for Adults: These soft bristle toothbrush heads are specifically designed for adults, which means that they are optimized for the needs and requirements of adult teeth and health. 5. Advanced Brush Technology: These compatible toothbrush heads feature advanced brush technology that is gentle yet effective on teeth and gums. The Nylon Bristles help remove plaque and promote healthy teeth and gums. Color:As Shown Material:plastic Package Contents: 4 * toothbrushes to replace the brush head Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.