Blade for lawn mower mowers COMPATIBLE WITH : - 476, 487, 490, 494, 496, 497, 498; - 720, 760 - Columbia 51 - Rex 21 Features : Length: 508 mm Centre hole diameter: 9.5 mm Side hole diameter: 7.9 mm Side hole centre distance: 63.5 mm Code : 22-019 Reference code : 0203-000, 0310-000, 742-0100, 742-0123 742-0123A, 742-0123B, 742-0128, 742-0133 742-0187, 942-0123B 7532, 7582, 9201, 11371, AR-MTD-20 MTD