" Dr. Stone" Professional Stone Treatment For grinding, levelling and restoration of granite and marble; The motor and gearbox are imported from Germany to meet our unique requirements. Dr. Stone DR-20t with the power of 1800W,150 rpm; weight 52kgs; width 51cm( 20" ) Our machines can add up to 3 x 15kg weight; with aluminium alloy pad holder 9 KG; 4gal solution tank; the total working weight can up to 120 kgs that can perform excellent even on granite. We also supply diamond pads and crystalization chemcials for the stone treatment.