Hardened cylindrical head punches with stepped point and spring loaded ejector similar to ISO 8020 made from high speed steel HSS. The shank is hardened 62 ±1 HRC and the head is hot forged 45 ±5 HRC. Also available in HWS, ASP23, CPM10V and tungsten carbide. With cross bore hole.
The shank is ground to a m5 tolerance.