Runout info is etched except KM is stamped. Pressing Plant ID: KM (Stamped in runout) Matrix / Runout: HSR-181 A (A label) Matrix / Runout: HSR-181 B (B label) Matrix / Runout: HSR-181-A KPG + KM + (A runout) Matrix / Runout: HSR-181-B KPG + KM + (B runout)