... linear guide 4.fast speed and strong power Scope: Natural marble, granite, bluestone, sandstone, artificial stone, tombstone, milestones, tile, floor ... and other hard stone carvings can be layered to 3mm Marble, bluestone, etc. can be a sculpture to 5mmFeatures:1 ... 10 two-way tool cooling system, improve tool life;11.CNC digital control, with the breakpoint memory Duandao continued carving, ...