Choose from the dropdown menu for the toothbrush OR replacement heads The toothbrush comes with 2 interchangeable heads for small or large dogs Petosan Silent power Toothbrush for Dogs, combines the benefits of a double headed toothbrush with new Sonic Technology. The 45 degree angle of brush heads allows you to reach both above and below the gum line. 20,000 Bristle Strokes per minute allow you to clean your pets teeth quickly and more effectively than a manual brush. Replacement brush heads available. Recommended to use different brush heads if brush is to be used on more than one pet to avoid cross contamination. Includes AAA battery. Combines the benefits of a double headed toothbrush with new Sonic Technology Allows you to reach both above and below the gum line 20,000 Bristle Strokes per minute Recommended to use different brush heads if brush is to be used on more than one pet. Petosan Silent power Replacement Heads 2-pk heads 1- Small/Medium head 1- Large head replaces the head on your Silent power toothbrush. The Silent power Toothbrush combines the benefits of a double headed toothbrush with new Sonic Technology.