Brush 'em clean with the Pack of Compatible Philips Sonicare Toothbrush Heads These replacement brush heads are compatible with Philips Sonicare toothbrushes With end-rounded nylon bristles that aim to clean the tooth surface and in between Designed to remove pesky plaque without causing irritation to your gums and teeth Fits perfectly on your Standard, Proresults, Flexcare, Healthy White or Easyclean model Please see Full Details for a list of product compatiblity Comes in a pack of 4, 8, 12 or 16 brush heads Available in 3 options: Original, Deep Clean or Sensitive Note: it is recommended that you change your brush head at least every month   Buying Options: 4.99 pounds instead of 9.99 pounds for the 4-Pack - save 50% 7.99 pounds instead of 14.99 pounds for the 8-Pack - save 47% 9.99 pounds instead of 18.99 pounds for the 12-Pack - save 47% 12.99 pounds instead of 21.99 pounds for the 16-Pack - save 41%