... 2, Grinding and polishing concrete, marble, granite, terrazzo;3, for coarse grinding, medium grinding, finepolishing, crystallization, preparation, maintenance. ... Performance:1, The frequency converter could change the motor speed,for meet different requirements of grinding.2, With magnetic disk ... : Weight 200KG Extra (Iron) Weight 45KG Current 16A Motor 10HP (7.5KW) Inverter 10HP/15HP Voltage 220/380 ...