... marble,granite,tombstone, milestone... 2. Stable T type structure, especially for heavy duty stone 3.High precsion JC-1318 Marble Stone ... for StoneApplicable materials :1.Suitable for natural marble, granite, bluestone, sandstone, artifical stone, tombstone, milestone, ceramic tile, jade, ... , drilling 2D engraving.2.Such as granite stone can be layered engraving to 3mm3. Marble, bluestone can be ...