Marking Punches with hardened and tempered stamping heads and an impression with controlled depth, in silky-dulled design. Type of characters acc. to DIN 1451 (middle). Each punch is marked with: 1. The character 2. Size of character 3. SCHLAGKOPFVERGÃTET 4. The international eye protection symbol Hardness at the engraving 58-60 HRC. Hardness at the stamping head: 38-46 HRC. Provided in blue unbreakable plastic boxes.