Compatible With PCS T-7S / T-6S Electric Toothbrush Replacement Head Universal DuPont Bristle Adult Nozzles Replace Brush Head*Note: Non-original, High superb substitute toothbrush head:1 for PCS T-7S / T-6S Electric toothbrush. 2. Soft DuPont bristles, appropriate for touchy tooth to apply 3. Ultrasonic electric toothbrush can effectively get rid of plaque and reduce gingival necrosis. 4. Adopt DuPont American tynex basic 0 bristles bristles,gently to your teeth. 5. 0 bristle tip diameter, deep clean the distance between teeth,UV sterilized. 6 sealed packing, much more secure to use. 7 replace the toothbrush heads every three months.