Stens 12 Hi-Lift Lawnmower Blades for John Deere Lawn and Utility Tractors with 60" Decks AM100538 Replaces OEM Part Numbers: John Deere: AM100538, M141785, M87622; Lesco: 050391 Fits: John Deere 4010 rider, 400-455 series tractors, F910-F935 and F1145 series front mounts and 670-955 compact utility tractors with 60" deck; requires 3 for 60" Fits: John Deere 160, 261, 400, 420, 430, 655, 755, 855, 955, 2210, 4010, 4100, 4110, 4115, 4200, 4210, 4300, 4310, 4400, 4410, 4500, 4510, 4600, 4610, 4700, 4710 Tractors Blade Specs: Length: 20 1/2", Center Hole: 29/32", Width: 2 1/2", Thickness: .312"