Runouts are stamped. Label Code: LC 05416 Matrix / Runout: B148850-01 A1 MK (Runout Side A) Matrix / Runout: B148850-01 B1 MK (Runout Side B) Matrix / Runout: B148850-02 C1 MK (Runout Side C) Matrix / Runout: B148850-02 D1 MK (Runout Side D) Matrix / Runout: SERR·030·T2·AP (Runout Side A) Matrix / Runout: SERR·030·T2·BP (Runout Side B) Matrix / Runout: SERR·030·T2·CP (Runout Side C) Matrix / Runout: SERR·030·T2·DP (Runout Side D)