FIG. 1 is a perspective view of a brush head for electric toothbrush showing our new design with the broken line showing of a handle being for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a perspective view of the brush head of this invention;

FIG. 3 is a plan view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view therof;

FIG. 7 is a left side view thereof; and,

FIG. 8 is a right side view thereof.