... , 42CrMo, copper, stainless steel and so on as per your requestprocessForgedHeat treatmentHigh frequency quenching, ... from simplex,duplex,triplex quadruplex,quintuples,o on.Hub style : Type A (Hubless) or Type ... B (Hub) or Typle C (Hub on both size) or Type D(detacheable bolt on ... capablities.4.Industrial roller chain of sprocket style are simplex, duplex , triplex and ...