Shrih Handheld Engraving Etching Pen Electric Carving, Engrave and protect your valuables and keepsakes with this engraving pen. Suitable for glass, metal, plastics, wood, steel and leather. Ideal for protecting your valuables, Spare engraving tip included, Suitable for glass, metal, plastics, wood, steel and leather, Can be used for arts and crafts purposes, Battery powered (requires 2 x AA batteries - not supplied). Contents: 1 x Engraving Pen 1 x Spare Engraving Tip. Instructions: Hold the Engrave It like you would a pencil, with your thumb over the control button. Press the control button in with your thumb. Applying slight pressure, press tool down on surface to be engraved. Hold it at a slight angle (like you would a pencil). To turn off simply release thumb pressure from control button.