Komet Q Finishers for efficient finishing of composites and optimal results. Conical shaped pointed needle. Tungsten carbide, yellow and blue ring, for interproximal sanding. Working part 6mm. Full length 19mm. Max speed 300000rpm. Komet Q Finishers for efficient machining of composites and optimal results. The H134Q, H135Q and H50AQ instruments have a smooth, non-cutting tip that ensures gentle finishing without damaging the gingiva.