Soft Nylon bristle, can provide better cleaning and oral care. Rounded end bristle, protect teeth from too-firm brushing. Smart and confortable for using. A complete clean for cleanerteeth and healthier gums. Remove up to twice as much plaque as an ordinary manual toothbrush. Come with dentist recommended oscillate and rotate technology for rotate technology for maximum cleaning. Suitable for the following models: for D12, D12W, D12S, D16, D18, D20, D25, D29, D30, D32, D34, D36, D4510, D12013, D12013W, D12524, D17525, D19523, 19545, D20523, D20545, D8011, D9525, 4739, 3709, pro7000, pro8000, prog000, pro9000plus Type:Electric Toothbrush Head Accessories Colour:As Shown Material:Plastic+nylon bristles Package Contents: 20 * Toothbrush 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.