Set of 4 YanBan aftermarket, Philips Sonicare E-Series electric toothbrush heads

Set of 4 YanBan aftermarket, Philips Sonicare E-Series electric toothbrush heads 4.5 stars on Amazon. These are great replacements for a fraction of the cost. Unfortunately, my E-Series dies shortly after I purchased these Blue strip on bristles indicate when they are ready to be replaced. Individually wrapped