Stone slab polishing machine full automatic The machine works along the slideway , and the millstone moves along bridge like frame and has pneumatic pressure. All these make the slabs even and bright. Type : QM 120 Milling length max 3000mm Milling width max 1200mm Main power 15kw Vertical stroke 100mm Dimension 6.52.52m Weight 3000kgs http://www.supply-stonemachine.com/products_info/automatic-polishing-machine-125133.htm