Oregon 91-446, BLADE JOHN DEERE 21-3/8IN M139976 (2) for 42" cut, model GT225, LX225, LX279, GT225, GT235 Also Replaces: JOHN DEERE: M139972 (HL), M139975 (MULCH), M139976, M148613, M159046 (MULCH), M159047 (HL) Product Code:91446