... 3,Material:HSS M-2,SKH-9, SKD11, ITEM Guide Pins Specifications and Variables Highly polished finish 6-8 ... SKD11,ASP23,ASP30etc STARDANDDIN AISI JISDIA. TOLERANCE0.0002’’HARDNESSdetermined by material PLACE OF ORIGINGuangdong, China(Mainland)MACHINE TYPEPunching Machine ... , Punch Pins, Guide Pins, Dowel Pins, Parallel Pins, Guide Pillar, Guide Bush sets of stairs Lead Guides and Step Guides in China. ...