Double cleaning design: the io replacement heads for whitehead is cup-shaped, can be rotated left and right, clean teeth efficiently, bristles diagonally, effectively remove the sediment between teeth All replacement heads for electric toothbrush are packed in blister packaging to prevent exposure during transportation, please to use after receipt The softbristles of replacement head for are divided into two parts. The upper part can penetrate deep into the mouth. The lower part is exactly the size of a tooth and can enclose the entire tooth. The two-part in the toothpaste and removes more of the dental deposits in the mouth for Complete Pro-Health and Battery Powered Toothbrushes,We suggest that toothbrush should be replaced every 1 months You can receive 12 oral dual clean replacement heads and 3 removal tools, enough toothbrushes to use for a long time,take the action replacement heads for electric toothbrush back your home Color: As Shown Material: plastic Package Contents: 12* 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.