The twisted wire gives these models: Longer life. Higher removal capacity. Possibility to work at high speeds. Designed for use in portable machines. Suitable for brushing over large areas with a higher removal capacity. Exclusively designed threaded M14 x 2 and W5 / 8 “-11 (Code R-88) or M10 x 1.25 and M10 x 1.50 (Code R-77). Also valid to single thread. It allows an easier attachment and increases resistance. Action: Cleaning, Deburring. Tool: Grinder. Surface: Non-sparking, Stainless, Steel.