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.