Feature:1. Suitable for marking, numbering, beating on stainless steel, automobiles, motorcycles, bicycles and other metals.2. The steel head is sturdy, can be written with a light tap, the handwriting is clear and easy to read.3. After high frequency heat treatment, the hardness is high, and the wear resistance increases the service life.4. The product is integrally forged with tool steel material, extruded and formed to be durable.5. A large number punches, can meet your use and replacement needs, very practically.Specification:Item Type: Letter Number Punch SetMaterial: Tool steelUses: Suitable for marking, numbering, beating on stainless steel, automobiles, motorcycles, bicycles and other metalsContains Characters: 26 English letters, 1 symbol &, 9 numbers 0~8 (6 and 9 are shared)Character Size: Approx. 4mm / 0.2in.Package List:36 x Stamped Punch1 x Storage Bag