Big Horn 19223 Carbide Tip Scriber. Comes with a convenient and sturdy pocket clip. Great for Marking or Etching on Metal, Glass Etc. Used for home, craft etc. A sharp, tip in an attractive pen style. The tip retracts into the pen for safety and storage. Cuts into hard surfaces with no problem. Leaves clear marks on metal, glass, plastic and tools. It's the personal way to identify your valuable tools and personal possessions.