... as metal, chinaware, marble, glass, jade, crystal, plastic,wood etc.. Engraving the words, mark, pattern, the device can turn the button ... by the sub-five, to meet the different materials of engraving. Machine parameterVoltage Range :220V/50HZNib: diameter 3mm(hard alloy)Output ... -0.8mmN.W :450kGPackage weight:500g+Usage Method he right hand holds the pen in usage to make the head of ...