OEM MTD Part Number 756-0178 Compatibile With: ACE: E600E, E610E, E640F, E6C0F Bolens: 2X 22 inch Columbia: 10528GC, 11030GC, 11530GC, 12033GC, 12533GC, 13045GC Craftsman: 2X 24 inch, 2X 26 inch, 2X 28 inch, 2X 33 inch, 2X 45 inch GardenWay: E665E, E665F Huskee: 2X 22 inch, 2X 24 inch, 2X 24 inch E644E, 2X 24 inch E6A4E, 2X 26 inch, 2X 26 inch E640F, 2X 28 inch, 2X 30 inch, 643, E600E, E613E, E643F Lawn Chief: E600E, E660G, E6C0F Mastercraft: E642E, E643F, E662G, E662H, E663H Montgomery Ward: E640F MTD Gold: 2X 26 inch, 2X 26 inch E640F, 2X 28 inch, 2X 28 inch E660G, 524, 826, E600E, E610E, E640F MTD: 610E, 611D, 612E, 640F, 641E, 642F, 660G, 661E, E610E, E611D, E640F, E641E, E660G, E661E, E740F, E760F Power Pro: 2X 22 inch 611D, 2X 26 inch E640F, 2X 26 inch E740F,.