Product Description: Polishing is a main process procedure during metallurgical specimen preparation. We can get a very bright surface like a mirror after polishing. The Model PG-1 was designed incorporating our innovative design concept & many customers' suggestions. It is operated steadily in a low noise, and easy to use & maintain. As the size of the polishing disk and the transmission power are bigger than other alike products in China, it can adopt all kinds of materials polishing work. Specifications: Model: PG-1 Cooling System: Manual Polishing Disk Diameter: 220mm Rotation Speed: 900rpm or 1400rpm ( custom-made) Electromotor: YS7116 0.2kW 380V/ 220V 50Hz Overall Dimensions: 325 x 325 x 320mm Net Weight: 14 KGS