... materials of metal, chinaware, marble, glass, jade, etc DescriptionThe engraving pen is a new type of electronic engraving instrument. It is small, fast ... widely applied in engraving patterns on the surface of almost all the hard materials, such as metal. ceramic, glass, plastic, marble and ... (hard alloy)Dimension150 x 65 x 40mmNet weight250gPacking weight300g electric engraving pen for glass