... 2)square rail 3)DSP control system cnc marble router-XT-M1325 Cast iron T TYPE lathe bed, Rack Gear transmission ... ,and special tools for stone working..... ModelXT-M1325Working Area(xyz)1300*2500*300mmEngraving Depth150mmMax Engraving Speed3000mm/minReposition Accuracy<0.05/300mmWorking ...