... designed to engrave 3D Relief on marble ,granite ,sandstone ,stone , these tools will give a fast engraving and cut·Cel:12·Ced ... :C7·Design For CNC Milling Machine, Engraving marble ,granite ,sandstone ,stone, tile ,bluestone, glass·High Quality, Extra Long LifeCustomer Service·We ... if you have any questions regarding our products. Diamond Engraving cutting Bit Tools