Blade for lawn mower mowers ADAPTABLE TO: 21" push mowers Features : Length: 532 mm Centre hole diameter: 21 mm Side hole diameter: 10 mm Side hole centre distance: 63,5 mm Code : 22-157 Reference code : 742-0306, 742-0306A, 742-0490, 742-0521, 742-0621, 942-0621 MTD