... 1.engraving technology support for CNC Engraving Machine 2.Longer life-span than electroplated tool ... A, B, C, D, E , F , G series. Only appropriate Using stone engraving bits, to we could get ... using our bits and right parameters of engraving machine. C series: Smelting and Fusing Diamond grinding head, making ... for using our bits and right parameters of engraving machine. Model Ced(mm)Cel(mm)Shk(mm)Ovl ...