... .Exquisite and convenient 4. metal, chinaware, marble, glass Electric Engraving Pen for Promotion1.Personalize your valuables and add decorative flourishes to ... depth from fine lines to deep grooves.2.the engraving pen is tungsten alloy, is very durable.3.the switch of ... the engraving pen is in hand grip place. TypeYSSB-IIPower supply voltage220V/50HZTotal ...