Review on Replacement Toothbrush Heads Philips Sonicare Oral Care ~ Toothbrushes & Accessories by Amy Cummings

Of course I like the price of these replacement brush heads - much less than a branded replacement. I was concerned that the shape would be blockier (not tapered towards the tip) and hit my gums or that the toothbrush handle wouldn't recognize it. So far no problems. When the original MFR head was determined to be a worn handle, I installed one of those. It works perfectly, there are no problems with rubber bands and the handle has recognized that the head has been changed. The OEM version has a little metal tab, which they don't have, but do you know what that handshake could mean? When it wears out I will replace it, regardless of whether the grip counts.