[Features] A Nakanishi polishing tool dedicated for ultrasonic polishers, which achieves heavy-duty sonic power. An extensive tool lineup supporting various machining situations is available. · Suited for finishing high-hardness metals such as hardened copper and mold copper (removal of discharge hardened layer, etc.). Also suitable for polishing carbide dies and superalloy dies. · Plastic, press. Ideal for grinding/polishing finely detailed areas and rib slits in all kinds of molds, including forging, header, diecast, etc. · It can be used for grinding/polishing ceramics, precision electronic parts and precision machine parts.