Primarily used for hand marking hard materials like metals.
Stamping identification:
Useful for stamping personal identification or postcodes on items such as tools or bicycles.
Character sizes:
The size indicated on the packaging (e.g., 6.0mm, 3.0mm) refers to the height of the characters produced by the punches.
Set contents:
A typical set includes punches for numbers (0-9) and letters (A-Z, and sometimes '&').