Fortune X's soft-medium DuPont, nylon bristled toothbrush replacement heads are inserted into your Electro-Wave toothbrush to give your teeth and gums a gentle cleaning experience. Don't settle for toothbrush replacement heads with hard bristles, get professional-grade, soft-medium bristles that are recommended by dentists. With Fortune X, you never have to worry about dental hygiene again. Our replacement heads are shipped to your door, on a regular basis. Sign up today!