*Package include: Pack of 10 PCS Replacement Heads for Electric Toothbrush. *Wide compatibility XIAOHEAD replacement brush head Compatible with AquaSonic black series, black series pro, for vibe series, and for Duo series pro electric toothbrush. *Why choose our toothbrush heads: toothbrush replacement heads for are made with bristles from famous American brands, the apex of quality standard recognized in the oral care synthetic filament industry. more dense bristles, Standard sized, Slim angled neck and densely-packed are proven to reduce gingivitis up to 8x versus a manual toothbrush. The curved design of the bristles fits the teeth well to expand the brushing area and improve the efficiency The electric toothbrush changing head is individually sealed and comes with a transparent hygienic cap that is ideal for storage and travel.