Hardened cylindrical head punches with stepped point and spring loaded ejector similar to ISO 8020 made from 12% chrome steel HWS. The shank is hardened 61 ±1 HRC and the head is hot forged 45 ±5 HRC. Also available in HSS, ASP23, CPM10V and tungsten carbide. With cross bore hole.
The shank is ground to a m5 tolerance.