The innovative ALUMASTER High Speed Disc is a unique product with an extremely high stock removal rate. It is ideal for processing aluminum as it does not generate hazardous or explosive dust. It consists of specially developed tungsten carbide cutting inserts, which are fixed to the High Speed Disc. Special disc for processing aluminum alloys using an angle grinder. Also designed for peripheral milling and milling out root welds. High Speed Disc ALUMASTER HSD-R 4-1/2"/5" including pre-mounted tungsten carbide cutting inserts, TORX key, and plastic box.