Detail:The base of our filaments is mainly used premium nylon PA612. After many complicated processes, diamond grits or silicon carbide grits is evenly added into it to produce abrasive wire. Our brush achievement of efficient grinding and long lifetime.According to different hardness grade of granite, and processed surface effect. To choose diamond or silicon carbide brush filament production of grinding brush. This series of products is suitable for granite stone make matte finish,They are make both for the aging of granite stone and with the elegant artistic effect of classic style silk satin.