... , long life, under the knife precision. 2> The CNC Stone Engraving Machine seamless welded steel structure, rigid Haobu deformation, table back ... Granite, marble, Qingshi, sandstone, and other stone carvings Granite and other hard stone carving to be at level 5 mm Marble, Qingshi ... voltageAC220V/50HzSpindle power2.2kwSpindle rotating speed0-24000rpm/minDrive motorSteper8 CNC Stone Engraving Machine