6 Reviews Description These TAPERED refill tips are to be used with the Butler GUM Proxabrush Handle. Together, they provide a narrower head for easy access to all teeth. The nylon-coated brushes are great for people with tooth sensitivity and safe for use around dental implants. A shallow taper has been added to the shape of these brushes, so it is no longer cylindrical in shape. These brushes fit a Gum Proxabrush Handle (Code 610 or 611), please be sure that you have the correct handle or order it to fit your brushes.