... Noise,Waterproof motor 3.Safty operate 4.Strong cooling system (65*65mm) Automatic Metallographic Sample Cutting Machine The machine is a ... , ceramic, diamond grinding wheel must be used before cutting. BZQG-65 features: low noise, easy to operate, beautiful appearance, safe to ... -phase five-wire 380V 50HZ: A, B, C, N, PE (65*65mm)Automatic Metallographic Sample Cutting Machine