Designed for universal work on small and medium-sized metal surfaces, e.g. removing rough grinding traces, removing oxidation, and light deburring work. Achieve matte and satin-finished surfaces. POLIVLIES® grit size 180 M = medium (red-brown) The CDR clamping system has a threaded connection with male thread (plastic). Also compatible with the following commonly used systems: Roloc™, Lockit, Speed Lok TR, Power Lock Type III, Fastlock-System B, Roll-On.