Battery-powered engraving tool that"s almost as easy to use as writing with a pen * Inscribe name or other identification on valuables to deter theft, increase likelihood of recovery * Smooth, internal DC motor rotates shaft 10,000 RPM; diamond-embedded tip scribes steel, glass, wood * Convenient thumb button on barrel controls on/off; 2 AA batteries power for several jobs (not incl) * Use to safeguard jewelry, watches, bikes, tools, electronics, computers and other important items