... metal, chinaware, marble, glass, jade, etc DescriptionThe engraving pen is a new type of electronic engraving instrument. It is small, fast, long-last ... simple to operate. It is widely applied in engraving patterns on the surface of almost all the hard materials, ... (hard alloy)Dimension150 x 65 x 40mmNet weight250gPacking weight300g electric engraving pen for steel