Specially designed to allow effective cleaning of all interdental spaces, which are difficult to access for conventional toothbrushes. Fits Trio Compact and Clinic Flex cables. Available in 4 sizes. Each size has its corresponding colour, with a specific wire diameter (between 0.38 and 0.80 mm) and a specific bristle diameter (between 1.9 and 8 mm) to adapt to all sizes of interdental spaces. It has bicolour bristles: white to reveal sensitive gums in case of bleeding, and black, thinner, to facilitate the insertion of the brush and visualize the removal of bacterial plaque.