Sign the back of your jewerly pieces with this compact, pen-style Micro Engraver from Beadsmith. Safe for metal, wood, glass and ceramics, this engraver is also ideal for etching identifying information on the back of electronics. The padded contoured grip makes it comfortable to use and allows for greater control. Two round diamond-tip bits and an allen wrench are included. This battery-operated tool requires 2 AAA batteries (not included).