For universal coarse grinding work with high stock removal rates. Ideal for dressing weld seams in hard-to-reach places. Longer service life and higher stock removal rate when compared to abrasive discs. 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.