Permanently mark test tubes, bottles, racks, keys, equipment, tools, electronics, and more with this cordless engraver. This convenient tool is operated by two AA batteries (not included) and will mark most materials including glass, plastic, wood, metal, bone, and stone. Simply hold the engraver like a pen, press the power button, apply light pressure, and write. The engraving is permanent and will not fade if exposed to chemicals, sunlight, or extreme temperatures. When not in use, store your engraver in the polypropylene stand (sold separately) which also holds an extra engraving tip.