Oregon 91-449, BLADE SCOTTS 21-1/2IN M139802 (2) for 42" cut, yard tractor, mulcher, models made by John Deere (2) for 42" cut, mulcher, yard tractor, models made by John Deere Also Replaces: JOHN DEERE: M127129, M139802, M145969 SCOTTS: M139802, M145969 Product Code:91449