Made of highly polished, case hardened steel, and very smooth. One horn is round, the other horn is flat. Ideal for precision work such as wire wrapping and metal forming. Size: 4-1/4" W x 1-1/2" H x 1" DWhy do I need this item? When making wire earrings, pendants and necklaces, or when hammering silver, copper or other sheet metal into shape, this is a handy tool. Also, hammering wire or sheet against a smooth, solid, surface is necessary in order to "harden" the material so that it will retain its' finished shape. Use this item in conjunction with our Chasing Hammer, or Goldsmith Hammer.