The W-shaped three-dimensional cutting process allows the bristles to better fit the of the teeth and easily reach hard-to-reach blind areas of the mouth. Rounded treatment protects the gums and takes careful care. The top of each bristle is rounded to provide careful care for the oral cavity and avoid scratching the tooth surface or damaging the gums. High-density hair transplantation, cleaning and efficient, compared with traditional toothbrush heads, the amount of hair transplantation is increased by 40%. Easy to assemble, easy to brush your teeth, the brush head and the main unit plug and play together, there is no difficulty in started. Ten packs to meet your . Colour:As Shown Material:ABS type:Grey Package Contents: 10 x electric toothbrush heads 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.