The Personalizer Plus allows you greater power and control when applying a custom engraving or mark into the metal of your knife, gun, medical tool, or jewelry. Using an electrolyte solution and AC or DC current instead of a drill bit allows for great speed and uniform repetition without the manual dexterity. Etching machine comes with two bottles of electrolyte fluid (SCE-1 and SCE-10), one bottle of cleaner, one applicator tool, one pack of applicator pads, one roll of stencil papers, one test stencil, and instructions.