Item : B00008BQVL Customer Reviews great by .. Carol E. Miller () couldn't find replacement heads at my local safeway so i went online. easy to do and delivered right to my door in a timely fashion. Philips Sonicare Advance HX4012 Compact Replacement a-Series Compact Brush Head, by .. Agatha Christy (portland, or) I am very pleased with the brush heads for my tooth brush and am thankful I found then since they seem to be unavailable in stores. Just fine by .. L. Curtis () It's hard to find these compact heads in the local stores anymore. They make it easier to get to the back teeth in a smaller mouth. No complaints, they do what they're supposed to do. Unhappy by .. Brian A. Tarian () I had signed up for purchases every six months with free shipping. I was charged shipping for my last order and did not realize that shipping was being charged till I received my order. This was a classic "bait and switch" and I cancelled my subscription because of this. A classic Philips product by .. Candace Dailey (Northampton, PA USA) Have used Philips Sonicare Advance model for the last 5 years. Replacement brush heads have lasted beyond the recommended time. MY DENTIST GUESSED I was using the product after the first year during annual visit. Have an older unit which is used w/ used brushes as a utility tool to clean around the house, remove stains on grout & small areas, etc. A VERY FINE, LONG-LASTING PRODUCT!!