... round gui rail & ballscrew Multifunction 4 -axis CNC Engraving Machine ZK-6060 ApplicationsWood ,Metal, Stone,acrylic ,organic glass, ... jade, emerald, jewelry engraving, 3D engraving.... Machine specifications X/Y-axis working area 600*600mmMillling cutter 3 ... structureCast ironBiggest engraving speed 6000mm/minPower supplyAC220V 50HZ Machine features1. Imported the ball screw and linear round ...