Features High Quality Material By combining high quality metal and plastic materials, the polishing pen engraver is not easy to fail and very durable. A Practical Tool The sharpening pen set comes with a variety of grinding attachments and is perfect for polishing, nail air blowing, engraving, etc. Wide application: allows free engraving on glass, metal, wood, plastic, leather, jewels, stone, etc., very practical and reliable. GREAT EFFICIENCY Equipped with a good bearing, the carving pen features high speed, which improves your overall work efficiency. Has a Compact Size The small electric engraving pen conforms to the standard design and allows high accuracy when etching every detail. Specification: Item Type: Electric Engraving Pen Material: plastic, metal. Package list: 1 x electric engraving pen. 1 x charging cable. 20 x sanding bits. or 1 x electric engraving pen. 1 x charging cable. 20 x sanding bits. 3 x cutting pieces. 1 x circular saw blade rod. 3 x saw blades. 4 set x engraving stamps Package List 1 x Electric Engraving Pen 1 x Charging Cable 20 x Grinding Bit